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A118439 Column 0 of triangle A118438. 2
1, -1, 5, 11, -23, -41, 45, -29, 337, 1199, -3115, -6469, 10297, 8839, 16125, 108691, -354143, -873121, 1721765, 2521451, -1476983, 6699319, -34182195, -103232189, 242017777, 451910159, -597551755, -130656229, -2465133863, -10513816601, 29729597085, 66349305331, -116749235903 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..32.

FORMULA

G.f.: (1-x+10*x^2+6*x^3+21*x^4-5*x^5)/(1-x^2)/(1+6*x^2+25*x^4).

PROG

(PARI) {a(n)=polcoeff((1-x+10*x^2+6*x^3+21*x^4-5*x^5)/(1-x^2)/(1+6*x^2+25*x^4+x*O(x^n)), n)}

CROSSREFS

Cf. A118435 (triangle), A118440 (row sums); A118436 (column 0 of inverse).

Sequence in context: A147081 A046628 A262284 * A323042 A210731 A295959

Adjacent sequences:  A118436 A118437 A118438 * A118440 A118441 A118442

KEYWORD

sign

AUTHOR

Paul D. Hanna, Apr 28 2006

STATUS

approved

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Last modified September 21 21:15 EDT 2019. Contains 327282 sequences. (Running on oeis4.)