|
%I #9 Aug 21 2021 22:00:42
%S 4,10,12,16,22,40,60,66,70,78,88,96,100,106,126,150,162,172,178,210,
%T 228,238,240,256,262,268,292,346,348,358,378,396,430,432,442,460,490,
%U 498,508,520,546,576,592,598,600,630,658,676,682,732,738,742,760,772
%N Numbers k such that x^k + x^(k-1) + x^(k-2) + ... + x + 1 is irreducible over GF(7).
%F a(n) = A019337(n+1) - 1. - _Joerg Arndt_, Apr 17 2020
%Y Cf. A071642.
%Y Cf. A019337. - _Joerg Arndt_, Apr 17 2020
%K easy,nonn
%O 1,1
%A _Robert G. Wilson v_, Jun 22 2002
|
