A111539 Row sums of triangle A111536.

1, 2, 7, 34, 211, 1564, 13291, 126430, 1326211, 15184744, 188348659, 2515991290, 36018842875, 550317892372, 8940695112331, 153950966471734, 2801321782936819, 53720913548093344, 1083061044893428675

Offset

0,2

Links

Table of n, a(n) for n=0..18.

Prog

(PARI) {a(n)=if(n<0, 0, sum(k=1, n+1, (matrix(n+k, n+k, m, j, if(m==j, 1, if(m==j+1, -m+1, -(m-j-1)*polcoeff(log(sum(i=0, m, (i+1)!/1!*x^i)), m-j-1))))^-1)[n+1, k]))}

Crossrefs

Cf. A111536.

Sequence in context: A002720 A234239 A249833 * A337000 A074059 A177401

Adjacent sequences: A111536 A111537 A111538 * A111540 A111541 A111542

Keyword

nonn

Author

Paul D. Hanna, Aug 06 2005

Status

approved