A256638 Orders n of cyclotomic polynomials containing a coefficient with an absolute value greater than one, with n not divisible by 5.

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

Offset: 1

Author

Derek Orr, Apr 22 2015

Keywords

• nonn

Comments

Numbers in A013590 that are not divisible by 5.

Crossrefs

Cf. A013590, A013595.

Programs

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