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A113342
Column 2 of triangle
A113340
, also equals column 0 of
A113340
^5.
4
1, 5, 35, 325, 3880, 57560, 1030751, 21763632, 531604250, 14789895891, 462672349092, 16100666809097, 617634167482824, 25916099832677757, 1181568927574816310, 58194225186901919790, 3080529680131892318877
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..16.
PROG
(PARI) a(n)=local(A, B); A=matrix(1, 1); A[1, 1]=1; for(m=2, n+3, B=matrix(m, m); for(i=1, m, for(j=1, i, if(i<3 || j==i || j>m-1, B[i, j]=1, if(j==1, B[i, 1]=1, B[i, j]=(A^(2*j-1))[i-j+1, 1])); )); A=B); A[n+3, 3]
CROSSREFS
Cf.
A113341
(column 1),
A113343
(column 3),
A113344
(column 4),
A113340
.
Sequence in context:
A362356
A307679
A305306
*
A262248
A346666
A369724
Adjacent sequences:
A113339
A113340
A113341
*
A113343
A113344
A113345
KEYWORD
nonn
AUTHOR
Paul D. Hanna
, Nov 08 2005
STATUS
approved
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Last modified August 27 05:29 EDT 2024. Contains 375462 sequences. (Running on oeis4.)