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A014016
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Expansion of inverse of 7th cyclotomic polynomial; period 7: repeat [1, -1, 0, 0, 0, 0, 0].
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1
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1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, -1, 0, 0
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (-1,-1,-1,-1,-1,-1).
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FORMULA
| a(n)=(1/7)*{-(n mod 7)-[(n+5) mod 7]+2*[(n+6) mod 7]}, Paolo P. Lava, Mar 10 2011.
G.f. 1 / ( 1+x+x^2+x^3+x^4+x^5+x^6 ). - R. J. Mathar, Mar 11 2011
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MAPLE
| with(numtheory, cyclotomic); c := n->series(1/cyclotomic(n, x), x, 80);
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CROSSREFS
| Sequence in context: A016377 A016425 * A014023 A016428 A016417 A016407
Adjacent sequences: A014013 A014014 A014015 * A014017 A014018 A014019
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KEYWORD
| sign
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AUTHOR
| Simon Plouffe (simon.plouffe(AT)gmail.com)
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