A126464 Row sums of triangle A126460.

1, 2, 3, 8, 50, 635, 13389, 420865, 18491156, 1084804118, 82081329459, 7794746829520, 908790397019076, 127745867968533747, 21322592031518420776, 4171751138526111626665, 946103460280012610769060

Offset

0,2

Links

Table of n, a(n) for n=0..16.

Prog

(PARI) {a(n)=sum(k=0, n, abs((matrix(n+1, n+1, r, c, binomial((c-1)*c*(c+1)/3!-k*(k+1)*(k+2)/3!+r-c, r-c))^-1)[n+1, k+1]))}

Crossrefs

Cf. A126460; A126461, A126462, A126463.

Sequence in context: A369602 A001289 A103045 * A041979 A001686 A013205

Adjacent sequences: A126461 A126462 A126463 * A126465 A126466 A126467

Keyword

nonn

Author

Paul D. Hanna, Dec 27 2006

Status

approved