id:A134526 - OEIS Search Results

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Column 3 of triangle T=A134523, also equals column 0 of the matrix power T^10, where column k of T = column 0 of matrix power T^{(k+1)(k+2)/2} for k>=0.

+0
4

1, 10, 145, 2980, 83890, 3133720, 151359220, 9253115968, 703311701611, 65465796819199, 7366123073560513, 990631711148569192, 157661483179139961763, 29435041309710813208444 (list; graph; listen)

	OFFSET	`0,2`
	PROGRAM	`(PARI) {a(n)=local(A, B); A=matrix(1, 1); A[1, 1]=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^(j*(j+1)/2))[i-j+1, 1])); )); A=B); A[n+4, 4]}`
	CROSSREFS	`Cf. A134523 (triangle); other columns: A134524, A134525.` `Adjacent sequences: A134523 A134524 A134525 this_sequence A134527 A134528 A134529` `Sequence in context: A113354 A027397 A081697 this_sequence A055761 A095889 A097638`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Nov 15 2007`

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Last modified October 16 00:31 EDT 2008. Contains 145098 sequences.

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