0,3

G.f.: (1-2*x+8*x^2-16*x^3+128*x^4-96*x^5+128*x^6-256*x^7)/(1-2*x)/(1+4*x^2)/(1+64*x^4).

(PARI) {a(n)=polcoeff((1-2*x+8*x^2-16*x^3+128*x^4-96*x^5+128*x^6-256*x^7)/(1-2*x)/(1+4*x^2)/(1+64*x^4+x*O(x^n)), n)}

Cf. A118438 (triangle), A118439 (column 0); A118437 (row sums of inverse).

Sequence in context: A019217 A009371 A101502 this_sequence A013037 A129825 A129814

Adjacent sequences: A118437 A118438 A118439 this_sequence A118441 A118442 A118443

sign

Paul D. Hanna (pauldhanna(AT)juno.com), Apr 28 2006