A073420 G.f.: 1/B(x) where B(x) = g.f. for A072964.

1, -1, -1, -1, 0, -2, -4, -4, -8, -10, -17, -10, 6, 45, 260, 604, 1285, 3329, 6755, 12550, 25790, 46302, 75922, 129739, 188164, 215880, 177637, -208052, -1480885, -4563499, -11984644, -28275270, -61059278, -126088969, -248020723, -462216478, -823834918, -1383451194, -2136524063

Offset: 0

Author

N. J. A. Sloane, Aug 26 2002

Keywords

• sign
• easy

Crossrefs

Cf. A072964.

Extensions

More terms from R. J. Mathar, Feb 13 2008