Revision History for A111551
(Underlined text is an addition;
strikethrough text is a deletion.)
Showing all changes.
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#3 by Russ Cox at Fri Mar 30 18:36:50 EDT 2012
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| AUTHOR
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_Paul D. Hanna (pauldhanna(AT)juno.com), _, Aug 07 2005
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Discussion
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| Fri Mar 30
| 18:36
| OEIS Server: https://oeis.org/edit/global/213
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#2 by N. J. A. Sloane at Sat Nov 10 03:00:00 EST 2007
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| KEYWORD
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nonn,new
nonn
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| AUTHOR
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Paul D . Hanna (pauldhanna(AT)juno.com), Aug 07 2005
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#1 by N. J. A. Sloane at Wed Sep 21 03:00:00 EDT 2005
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| NAME
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Column 2 of A111549, which is the matrix log of A111544.
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| DATA
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0, 3, 9, 47, 321, 2607, 24099, 247527, 2783331, 33924303, 445016619, 6249234807, 93541817331, 1487200667103, 25037315924859, 445123900236807, 8336458657796931, 164100631571947503, 3388128151043405259
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| OFFSET
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0,2
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| PROG
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(PARI) {a(n)=local(M=matrix(n+3, n+3, m, j, if(m==j, 1, if(m==j+1, -m+1, -(m-j-1)*polcoeff(log(sum(i=0, m, (i+2)!/2!*x^i)), m-j-1))))); if(n<0, 0, sum(i=1, #M, (M^0-M)^i/i)[n+3, 3])}
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| CROSSREFS
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Cf. A111549, A111544.
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| KEYWORD
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nonn
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| AUTHOR
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Paul D Hanna (pauldhanna(AT)juno.com), Aug 07 2005
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| STATUS
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approved
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