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A092202
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Expansion of (x-x^3)/(1-x^5).
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3
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0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Partial sums of A080891.
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REFERENCES
| M. E. Muldoon and A. A. Ungar, Beyond Sin and Cos, Mathematics Magazine, 69,1,(1996)
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FORMULA
| E.g.f. : F(1, 5, 1, x)-F(1, 5, 3, x); a(n)=sum{k=0..n, Jacobi(k, 5) }.
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CROSSREFS
| Cf. A080891.
Sequence in context: A073424 A135993 A145573 * A159684 A163538 A154104
Adjacent sequences: A092199 A092200 A092201 * A092203 A092204 A092205
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KEYWORD
| easy,sign
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AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Feb 24 2004
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