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A113347
Column 1 of triangle
A113345
, also equals column 0 of
A113350
^3.
4
1, 6, 39, 327, 3556, 48659, 812462, 16136404, 373415239, 9900007028, 296557405704, 9921937128500, 367181525916035, 14906571298831661, 659191947156441025, 31558799717042019635, 1626968083690674214906
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OFFSET
0,2
COMMENTS
A113345
is the matrix square of
A113340
.
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+2, 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^2)[n+2, 2]
CROSSREFS
Cf.
A113340
,
A113345
,
A113346
(column 0),
A113348
(column 2),
A113349
(column 3);
A113350
.
Sequence in context:
A007322
A341728
A058191
*
A265953
A356335
A246571
Adjacent sequences:
A113344
A113345
A113346
*
A113348
A113349
A113350
KEYWORD
nonn
AUTHOR
Paul D. Hanna
, Nov 08 2005
STATUS
approved
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Last modified March 29 05:48 EDT 2024. Contains 371265 sequences. (Running on oeis4.)