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A077907
Expansion of (1-x)^(-1)/(1+x+x^2-2*x^3).
0
1, 0, 0, 3, -2, 0, 9, -12, 4, 27, -54, 36, 73, -216, 216, 147, -794, 1080, 9, -2676, 4828, -2133, -8046, 19836, -16055, -19872, 75600, -87837, -27506, 266544, -414711, 93156, 854644, -1777221, 1108890, 2377620, -7040951, 6881112, 4915080, -25878093, 34725238, 983016, -87464439
OFFSET
0,4
CROSSREFS
Sequence in context: A152441 A248181 A229728 * A355360 A067346 A360282
KEYWORD
sign,easy
AUTHOR
N. J. A. Sloane, Nov 17 2002
STATUS
approved