The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A060633 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A060633

Surround numbers of an n X 1 rectangle.
(history; published version)

#31 by Charles R Greathouse IV at Thu Sep 08 08:45:03 EDT 2022

PROG

(MAGMAMagma) [(n^4 + 22*n^3 + 105*n^2 - 56*n - 8)/4: n in [1..40]]; // Vincenzo Librandi, Jul 03 2018

Discussion

Thu Sep 08

08:45

OEIS Server: https://oeis.org/edit/global/2944

#30 by N. J. A. Sloane at Thu Aug 13 14:01:06 EDT 2020

LINKS

E. J. Friedman, <a href="httphttps://wwwerich-friedman.stetsongithub.edu/~efriedmaio/mathmagic/0599.html">Math. Magic</a>

Discussion

Thu Aug 13

14:01

OEIS Server: https://oeis.org/edit/global/2865

#29 by Harvey P. Dale at Tue Dec 24 13:20:48 EST 2019

STATUS

editing

approved

#28 by Harvey P. Dale at Tue Dec 24 13:20:44 EST 2019

MATHEMATICA

LinearRecurrence[{5, -10, 10, -5, 1}, {16, 123, 361, 778, 1428}, 50] (* Harvey P. Dale, Dec 24 2019 *)

STATUS

approved

editing

#27 by Joerg Arndt at Tue Jul 03 02:33:37 EDT 2018

STATUS

reviewed

approved

#26 by Michel Marcus at Tue Jul 03 01:49:28 EDT 2018

STATUS

proposed

reviewed

#25 by Vincenzo Librandi at Tue Jul 03 00:57:08 EDT 2018

STATUS

editing

proposed

#24 by Vincenzo Librandi at Tue Jul 03 00:56:53 EDT 2018

DATA

16, 123, 361, 778, 1428, 2371, 3673, 5406, 7648, 10483, 14001, 18298, 23476, 29643, 36913, 45406, 55248, 66571, 79513, 94218, 110836, 129523, 150441, 173758, 199648, 228291, 259873, 294586, 332628, 374203, 419521, 468798, 522256, 580123, 642633, 710026, 782548, 860451

FORMULA

a(n) = (n^4 + 22n22*n^3 + 105n105*n^2 - 56n 56*n - 8)/4.

MATHEMATICA

Table[(n^4 + 22 n^3 + 105 n^2 - 56 n - 8) / 4, {n, 40}] (* Vincenzo Librandi, Jul 03 2018 *)

PROG

(MAGMA) [(n^4 + 22*n^3 + 105*n^2 - 56*n - 8)/4: n in [1..40]]; // Vincenzo Librandi, Jul 03 2018

STATUS

proposed

editing

#23 by Andrew Howroyd at Tue Jul 03 00:43:57 EDT 2018

STATUS

editing

proposed

#22 by Andrew Howroyd at Tue Jul 03 00:43:52 EDT 2018

PROG

(PARI) { for a(n)=1, 1000, write("b060633.txt", n, " ", {(n^4 + 22*n^3 + 105*n^2 - 56*n - 8)/4); ) } \\ Harry J. Smith, Jul 08 2009

STATUS

proposed

editing