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A093108 Numbers n such that the Zsigmondy number Zs(n,4,1) differs from the n-th cyclotomic polynomial evaluated at 4. 3
3, 9, 10, 21, 27, 50, 55, 68, 78, 81, 147, 155, 171, 243, 250, 253, 301, 406, 410, 605, 657, 666, 729, 889, 979, 1014, 1029, 1081, 1156, 1250, 1378, 1582, 1711, 1830, 1962, 2056, 2187, 2211, 2265, 2328, 2485, 2892, 3081, 3249, 3403, 4082, 4658, 4805, 4965 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A019322(n) does not equal A064080(n).

LINKS

Table of n, a(n) for n=1..49.

MATHEMATICA

Select[Range[10000], GCD[#, Cyclotomic[#, 4]]!=1 &] (* Emmanuel Vantieghem, Nov 13 2016 *)

CROSSREFS

Cf. A093107, A093106, A093109.

Sequence in context: A125237 A085459 A092169 * A247519 A077560 A326003

Adjacent sequences:  A093105 A093106 A093107 * A093109 A093110 A093111

KEYWORD

nonn

AUTHOR

Ralf Stephan, Mar 20 2004

EXTENSIONS

More terms from Vladeta Jovovic, Apr 02 2004

Definition corrected by Jerry Metzger, Nov 04 2009

STATUS

approved

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Last modified February 19 09:33 EST 2020. Contains 332041 sequences. (Running on oeis4.)