A199805 G.f.: 1/(1 + x + 5*x^2 - x^3 + x^4).

1, -1, -4, 10, 8, -61, 35, 268, -512, -732, 3525, -645, -17200, 24682, 57148, -197113, -46745, 1064776, -1085312, -4088200, 10626281, 7664631, -63798924, 40190250, 275842720, -548257525, -726966901, 3703906996, -893172736, -17805071620, 26701809197, 57726469171, -208147414040, -35978050998, 1107739781172, -1193723409393, -4172806133425

Offset: 0

Author

N. J. A. Sloane, Nov 10 2011

Keywords

• sign

Links

• Michael D. Hirschhorn, Non-trivial intertwined second-order recurrence relations, Fibonacci Quart. 43 (2005), no. 4, 316-325. See P_n.