A134485 Row sums of triangle A134484(n,k) = 2^[n(n-1) - k(k-1)] * C(n,k).

1, 2, 13, 305, 26881, 9078017, 11882207233, 60716967030785, 1217207202583019521, 96068905115897742032897, 29929069804525281689001787393, 36877162272858587692985585499111425

Offset

0,2

Links

Table of n, a(n) for n=0..11.

Prog

(PARI) a(n)=sum(k=0, n, 2^(n*(n-1) - k*(k-1))*binomial(n, k))

Crossrefs

Cf. A134484.

Sequence in context: A011808 A011841 A013106 * A236551 A304727 A355730

Adjacent sequences: A134482 A134483 A134484 * A134486 A134487 A134488

Keyword

nonn

Author

Paul D. Hanna, Oct 28 2007

Status

approved