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Search: id:A113373
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| 1, 10, 190, 4945, 163705, 6617605, 317416204, 17677189426, 1123660618048, 80411135580587, 6405386721320372, 562632770359355432, 54061761393693393203, 5643864294810397451552, 636388356169482970183598
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OFFSET
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0,2
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COMMENT
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Column k of A113370 = column 0 of A113370^(3*k+1) for k>=0.
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PROGRAM
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(PARI) {a(n)=local(A, B); A=Mat(1); for(m=2, n+4, 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[n+4, 4]}
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CROSSREFS
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Cf. A113370, A113371 (column 1), A113372 (column 2).
Sequence in context: A056174 A033714 A131521 this_sequence A045756 A072387 A134633
Adjacent sequences: A113370 A113371 A113372 this_sequence A113374 A113375 A113376
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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), Nov 13 2005
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