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A006090 Expansion of bracket function. 5
1, -6, 21, -56, 126, -252, 463, -804, 1365, -2366, 4368, -8736, 18565, -40410, 87381, -184604, 379050, -758100, 1486675, -2884776, 5592405, -10919090, 21572460, -43144920, 87087001, -176565486, 357913941, -723002336 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

REFERENCES

H. W. Gould, Binomial coefficients, the bracket function and compositions with relatively prime summands, Fib. Quart. 2 (1964), 241-260.

FORMULA

G.f.: 1/((1+x)^6-x^6).

CROSSREFS

Cf. A000748, A000749, A000750, A001659.

Sequence in context: A000389 A143980 A140228 * A192080 A019500 A100356

Adjacent sequences:  A006087 A006088 A006089 * A006091 A006092 A006093

KEYWORD

sign

AUTHOR

David Callan (callan(AT)stat.wisc.edu)

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Last modified February 13 23:23 EST 2012. Contains 205567 sequences.