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Search: id:A132627
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| 1, 1, 4, 60, 2960, 454072, 216266368, 328381917376, 1646431825247488, 28147649085162289088, 1682689316516069630268928, 358405429181246295625283815424, 275845379756819156941815068510302208
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OFFSET
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0,3
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COMMENT
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Triangle T=A132625 is generated by matrix powers of itself such that row n+1 of T = row n of T^(2^n) with appended '1' for n>=0 with T(0,0)=1.
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PROGRAM
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(PARI) {a(n)=local(A=vector(n+1), p); A[1]=1; for(j=1, n, p=2^(n+1)-2^(n-j+1)-j; A=Vec((Polrev(A)+x*O(x^p))/(1-x))); A[p+1]}
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CROSSREFS
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Cf. A132625, A132626.
Sequence in context: A099705 A012488 A012567 this_sequence A136385 A071582 A158300
Adjacent sequences: A132624 A132625 A132626 this_sequence A132628 A132629 A132630
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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 25 2007
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