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A167017
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Column 1 of triangle T=A167015: a(n) = T(n+1,1) = [T^(n+1)](n-1,0) for n>0 with a(0)=1.
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4
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1, 1, 3, 14, 105, 1080, 13916, 212634, 3723198, 73047825, 1581256303, 37350588290, 954796686233, 26246234745486, 771853099673490, 24180166328032252, 803996438505301917, 28283254774663359546, 1049653570430645994556
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OFFSET
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0,3
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COMMENTS
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In triangle T=A167015, row n of T equals the initial n terms in column 0 of matrix power T^n, reversed and with an appended '1'.
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LINKS
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PROG
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(PARI) {A167015(n, k)=local(M, N); if(n==k||n==k+1, 1, if(n==k+2, k+2, N=matrix(n, n, r, c, if(r>=c, A167015(r-1, c-1))); M=matrix(n+1, n+1, r, c, if(r>=c, if(r<=n, N[r, c], (N^n)[n-k, 1]))); M[n+1, k+1]))}
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CROSSREFS
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KEYWORD
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nonn,changed
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AUTHOR
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STATUS
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approved
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