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A071566
Numbers k such that x^k + x^(k-1) + x^(k-2) + ... + x + 1 is irreducible over GF(11).
1
2, 12, 16, 22, 28, 30, 40, 46, 58, 66, 70, 72, 100, 102, 108, 148, 162, 172, 178, 196, 222, 232, 250, 276, 280, 292, 330, 366, 372, 382, 418, 442, 460, 462, 466, 486, 498, 556, 568, 586, 592, 598, 600, 612, 618, 642, 646, 672, 676, 682, 700, 718, 760, 768
OFFSET
1,1
FORMULA
a(n) = A019339(n+1) - 1. - Ralf Stephan, Dec 26 2004
CROSSREFS
Cf. A071642.
Sequence in context: A176888 A114974 A298001 * A295821 A113802 A274890
KEYWORD
easy,nonn
AUTHOR
Robert G. Wilson v, Jun 22 2002
STATUS
approved