Search: id:A132616
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%I A132616
%S A132616 1,1,1,6,80,1666,47232,1694704,73552752,3744491970,218684051648,
%T A132616 14406896813608,1056681951098592,85379764462169382,7534286318509305600,
%U A132616 720884741940337283712,74330131862002429961712
%N A132616 Column 0 of triangle A132615.
%C A132616 Triangle T=A132615 is generated by odd matrix powers of itself such that 
               row n+1 of T = row n of T^(2n-1) with appended '1' for n>=0 with 
               T(0,0)=1.
%o A132616 (PARI) {a(n)=local(A=vector(n+1), p); A[1]=1; for(j=1, n-1, p=(n-1)*(n-2)-(n-j-1)*(n-j-2); 
               A=Vec((Polrev(A)+x*O(x^p))/(1-x))); A=Vec((Polrev(A)+x*O(x^p))/(1-x)); 
               A[p+1]}
%Y A132616 Cf. A132615 (triangle); other columns: A132617, A132618; A132619.
%Y A132616 Sequence in context: A024082 A132547 A167570 this_sequence A077393 A002676 
               A052348
%Y A132616 Adjacent sequences: A132613 A132614 A132615 this_sequence A132617 A132618 
               A132619
%K A132616 nonn
%O A132616 0,4
%A A132616 Paul D. Hanna (pauldhanna(AT)juno.com), Aug 24 2007

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