A246386 Column 0 of triangular matrix defined by exp(L) where L(n,k) = C(2*n, 2*k+1).

1, 2, 8, 46, 376, 3962, 52268, 837574, 15919312, 352811378, 8988379220, 260108194558, 8465863112056, 307308030658922, 12350649661695548, 546081624656924086, 26415011148370442656, 1390964198066780410082, 79383302469711339262628, 4890599813401910828495854, 324080647716643946657858632

Offset

0,2

Links

Table of n, a(n) for n=0..20.

Prog

 (PARI) {a(n)=local(L=matrix(n+1, n+1, r, c, if(r>=c, binomial(2*r-2, 2*c-1))), A);
A=sum(m=0, n, L^m/m!); A[n+1, 1]}
for(n=0, 25, print1(a(n), ", "))

Crossrefs

Cf. A246381, A246387.

Sequence in context: A074599 A007289 A099765 * A096656 A297014 A102009

Adjacent sequences: A246383 A246384 A246385 * A246387 A246388 A246389

Keyword

nonn

Author

Paul D. Hanna, Aug 24 2014

Status

approved