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 A166260 a(n) = A089026(n) - 1. 1
 0, 1, 2, 0, 4, 0, 6, 0, 0, 0, 10, 0, 12, 0, 0, 0, 16, 0, 18, 0, 0, 0, 22, 0, 0, 0, 0, 0, 28, 0, 30, 0, 0, 0, 0, 0, 36, 0, 0, 0, 40, 0, 42, 0, 0, 0, 46, 0, 0, 0, 0, 0, 52, 0, 0, 0, 0, 0, 58, 0, 60, 0, 0, 0, 0, 0, 66, 0, 0, 0, 70, 0, 72, 0, 0, 0, 0, 0, 78, 0, 0, 0, 82, 0, 0, 0, 0, 0, 88, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Same as A061006 except for a(4) = 0 (Wilson's Theorem). - Georg Fischer, Oct 12 2018 LINKS FORMULA a(n) = (n-1) * A010051(n). - Wesley Ivan Hurt, Oct 12 2018 PROG (PARI) a(n) = if (isprime(n), n-1, 0); \\ Michel Marcus, Oct 12 2018 CROSSREFS Cf. A010051, A061006, A089026. Cf. A119690. - R. J. Mathar, Oct 16 2009 Sequence in context: A065806 A228087 A119690 * A319813 A071648 A001613 Adjacent sequences:  A166257 A166258 A166259 * A166261 A166262 A166263 KEYWORD nonn AUTHOR Mats Granvik, Oct 10 2009 STATUS approved

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Last modified December 11 01:49 EST 2018. Contains 318049 sequences. (Running on oeis4.)