Revision History for A128987
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strikethrough text is a deletion.)
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Showing entries 11-18
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#8 by Joerg Arndt at Mon Feb 11 13:03:24 EST 2013
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#7 by Vincenzo Librandi at Mon Feb 11 09:34:11 EST 2013
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#6 by Vincenzo Librandi at Mon Feb 11 09:33:54 EST 2013
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| LINKS
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<a href="/Sindx_Rea.html#recLCC">Index to sequences with linear recurrences with constant coefficients</a>, signature (16,-96,256,-256).
<a href="/Sindx_Rea.html#recLCC">Index to sequences with linear recurrences with constant coefficients</a>, signature (16,-96,256,-256).
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#5 by Vincenzo Librandi at Mon Feb 11 09:33:14 EST 2013
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| LINKS
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<a href="/Sindx_Rea.html#recLCC">Index to sequences with linear recurrences with constant coefficients</a>, signature (16,-96,256,-256).
Vincenzo Librandi, <a href="/A128987/b128987.txt">Table of n, a(n) for n = 1..1000</a>
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| FORMULA
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a(n) = 16*a(n-1) -96*a(n-2) +256*a(n-3)-256*a(n-4). - Vincenzo Librandi, Feb 11 2013
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| MATHEMATICA
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LinearRecurrence[{16, -96, 256, -256}, {0, 64, 1152, 12288}, 30] (* Vincenzo Librandi, Feb 11 2013 *)
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| PROG
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(MAGMA) [(n^3 - n^2)*4^n: n in [1..25]]; // Vincenzo Librandi, Feb 11 2013
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| KEYWORD
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nonn,easy
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| STATUS
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approved
editing
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#4 by Russ Cox at Fri Mar 30 18:59:59 EDT 2012
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| AUTHOR
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_Mohammad K. Azarian (azarian(AT)evansville.edu), _, Apr 30 2007
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| EXTENSIONS
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Corrected the first offset. - . - _Mohammad K. Azarian (azarian(AT)evansville.edu), _, Nov 20 2008
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Discussion
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| Fri Mar 30
| 18:59
| OEIS Server: https://oeis.org/edit/global/294
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#3 by Russ Cox at Fri Mar 30 17:39:19 EDT 2012
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| FORMULA
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G.f.: 64x^2(1+2x)/(1-4x)^4. [From _R. J. Mathar (mathar(AT)strw.leidenuniv.nl), _, Dec 19 2008]
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Discussion
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| Fri Mar 30
| 17:39
| OEIS Server: https://oeis.org/edit/global/190
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#2 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009
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| OFFSET
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21,2
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| FORMULA
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G.f.: 64x^2(1+2x)/(1-4x)^4. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Dec 19 2008]
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| EXTENSIONS
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Corrected the first offset. - Mohammad K. Azarian (azarian(AT)evansville.edu), Nov 20 2008
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#1 by N. J. A. Sloane at Fri May 11 03:00:00 EDT 2007
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| NAME
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(n^3-n^2)*4^n.
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| DATA
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0, 64, 1152, 12288, 102400, 737280, 4816896, 29360128, 169869312, 943718400, 5075107840, 26575110144, 136096776192, 683973541888, 3382286745600, 16492674416640, 79439715106816, 378506877861888, 1786156639322112
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| OFFSET
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2,2
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| CROSSREFS
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Cf. A128796; A036289.
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| KEYWORD
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nonn,new
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| AUTHOR
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Mohammad K. Azarian (azarian(AT)evansville.edu), Apr 30 2007
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| STATUS
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approved
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