References to A078009

a(0)=1, for n>=1 a(n)=sum(k=0,n,5^k*N(n,k)) where N(n,k) =1/n*C(n,k)*C(n,k+1) are the Narayana numbers (A001263).
1, 1, 6, 41, 306, 2426, 20076, 171481, 1500666, 13386206, 121267476, 1112674026


1 seqfan posts

Fri Feb 18 14:28:55 CET 2011    [seqfan] More results on Basket Weave tiling paths

Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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