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 A134526 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. 3
 1, 10, 145, 2980, 83890, 3133720, 151359220, 9253115968, 703311701611, 65465796819199, 7366123073560513, 990631711148569192, 157661483179139961763, 29435041309710813208444 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS PROG (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. Sequence in context: A113354 A027397 A081697 * A055761 A095889 A097638 Adjacent sequences:  A134523 A134524 A134525 * A134527 A134528 A134529 KEYWORD nonn AUTHOR Paul D. Hanna, Nov 15 2007 STATUS approved

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