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A246387 Row sums of triangular matrix defined by exp(L) where L(n,k) = C(2*n, 2*k+1) for n>=0, k=0..n. 2
1, 3, 13, 85, 745, 8409, 117613, 1982629, 39464401, 912190449, 24152719957, 724395387805, 24377798538361, 913045021983273, 37793566032030013, 1718326694466838165, 85350122951385331105, 4609179886250736447969, 269460743294547701329573, 16987827203251213328307469 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
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!); sum(k=0, n, A[n+1, k+1])}
for(n=0, 25, print1(a(n), ", "))
CROSSREFS
Sequence in context: A125500 A121679 A349582 * A023037 A354436 A157451
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Aug 24 2014
STATUS
approved

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)