A136504 - OEIS

A136504

Row sums of triangle A136502.

1, 0, 1, -3, 19, -223, 5024, -221357, 19276981, -3337101203, 1151813749025, -793860037771900, 1093434531716214447, -3010922236710802264555, 16578683647583849207539977, -182552322688781602767983229935

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OFFSET

0,4

LINKS

Table of n, a(n) for n=0..15.

FORMULA

G.f.: 1/(1-x) = Sum_{n>=0} a(n)*x^n*(1+x)^(2^n).

PROG

(PARI) {a(n)=local(M=matrix(n+1, n+1, r, c, binomial(2^(c-1), r-c))); sum(k=0, n, (M^-1)[n+1, k+1])}

CROSSREFS

Cf. A136502.

Sequence in context: A217906 A166380 A136652 * A003111 A160888 A126444

Adjacent sequences: A136501 A136502 A136503 * A136505 A136506 A136507

KEYWORD

sign

AUTHOR

Paul D. Hanna, Jan 01 2008

STATUS

approved