OFFSET
0,3
COMMENTS
Eigensequence of A001263. - Philippe Deléham, Jun 22 2007
LINKS
Andrew Howroyd, Table of n, a(n) for n = 0..200
PROG
(PARI) \\ here T(n, k) is A001263.
T(n, k) ={if(k==0, 0, binomial(n-1, k-1) * binomial(n, k-1) / k)}
seq(n)={my(a=vector(n+1)); a[1]=1; for(n=1, n, a[n+1]=sum(k=1, n, a[k]*T(n, k))); a} \\ Andrew Howroyd, Nov 06 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
Gerald McGarvey, Feb 26 2005
EXTENSIONS
Terms a(12) and beyond from Andrew Howroyd, Nov 06 2019
STATUS
approved