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A113390
Column 1 of triangle
A113389
, also equals column 0 of
A113370
^6.
2
1, 6, 66, 1091, 24891, 737061, 27110418, 1199197442, 62240034172, 3718021355407, 251730371459590, 19076604651022143, 1601423150451641820, 147628858305489901288, 14834881996161804192069
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OFFSET
0,2
LINKS
Table of n, a(n) for n=0..14.
FORMULA
Column k of
A113389
= column 0 of
A113370
^(3*k+3) for k>=0.
PROG
(PARI) a(n)=local(A, B); A=Mat(1); for(m=2, n+1, 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^(3*j-2))[i-j+1, 1])); )); A=B); (A^6)[n+1, 1]
CROSSREFS
Cf.
A113389
,
A113378
(column 0),
A113391
(column 2),
A113370
.
Sequence in context:
A359462
A264407
A112942
*
A267080
A229002
A122020
Adjacent sequences:
A113387
A113388
A113389
*
A113391
A113392
A113393
KEYWORD
nonn
AUTHOR
Paul D. Hanna
, Nov 14 2005
STATUS
approved
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Last modified June 9 00:44 EDT 2024. Contains 373227 sequences. (Running on oeis4.)