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A256638 Orders n of cyclotomic polynomials containing a coefficient with an absolute value greater than one, with n not divisible by 5. 0
273, 357, 429, 546, 561, 609, 627, 714, 759, 777, 819, 858, 897, 957, 969, 987, 1001, 1023, 1071, 1092, 1122, 1131, 1218, 1221, 1239, 1254, 1287, 1309, 1407, 1419, 1428, 1463, 1491, 1518, 1547, 1551, 1554, 1638, 1659, 1677, 1683, 1716, 1729, 1749, 1767, 1771, 1794, 1827, 1869, 1881, 1887, 1911, 1914, 1938 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Numbers in A013590 that are not divisible by 5.
LINKS
PROG
(PARI) is(n)=if(n%5, for(k=0, n, if(abs(polcoeff(polcyclo(n), k))>1, return(n))); 0)
for(n=1, 10^4, if(is(n), print1(n, ", "))) \\ edited by Michel Marcus, Apr 21 2018
CROSSREFS
Sequence in context: A043812 A043821 A217004 * A338557 A347882 A347888
KEYWORD
nonn
AUTHOR
Derek Orr, Apr 22 2015
STATUS
approved

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Last modified February 29 07:23 EST 2024. Contains 370414 sequences. (Running on oeis4.)