|
| |
|
|
A014021
|
|
Inverse of 12th cyclotomic polynomial.
|
|
3
| |
|
|
1, 0, 1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 1, 0, 1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 1, 0, 1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 1, 0, 1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 1, 0, 1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 1, 0, 1, 0, 0, 0, -1, 0, -1, 0, 0, 0, 1, 0, 1, 0, 0, 0, -1, 0, -1
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,1
|
|
|
LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (0,1,0,-1)
|
|
|
FORMULA
| a(n)=(1/12)*{-(n mod 12)-[(n+3) mod 12]+[(n+4) mod 12]-[(n+5) mod 12]+[(n+6) mod 12]+[(n+9) mod 12]-[(n+10) mod 12]+[(n+11) mod 12]}, Paolo P. Lava, Mar 10 2011.
G.f. 1 / ( 1-x^2+x^4 ). - R. J. Mathar, Mar 11 2011
|
|
|
MAPLE
| with(numtheory, cyclotomic); c := n->series(1/cyclotomic(n, x), x, 80);
|
|
|
CROSSREFS
| Sequence in context: A015101 A145649 A016340 * A015725 A016331 A014429
Adjacent sequences: A014018 A014019 A014020 * A014022 A014023 A014024
|
|
|
KEYWORD
| sign
|
|
|
AUTHOR
| Simon Plouffe (simon.plouffe(AT)gmail.com)
|
| |
|
|
