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 A255921 Bases b for which no primes p with p < b exist such that p is a base-b Wieferich prime. 12
 2, 3, 4, 6, 11, 12, 14, 15, 16, 20, 34, 36, 39, 47, 52, 56, 58, 59, 66, 72, 83, 84, 86, 87, 88, 90, 92, 95, 96, 102, 103, 104, 106, 108, 111, 114, 119, 123, 135, 139, 140, 142, 144, 156, 159, 160, 162, 167, 171, 175, 180, 183, 186, 187, 194, 198, 200, 203, 204 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers b such that A255920(b) = 0. Complement of A273786. - Felix Fröhlich, Dec 03 2020 LINKS Felix Fröhlich, Table of n, a(n) for n = 1..10000 PROG (PARI) is(b) = forprime(p=1, b-1, if(Mod(b, p^2)^(p-1)==1, return(0))); 1 CROSSREFS Cf. A255920, A255922, A255923, A255924, A255925, A273786. Sequence in context: A134696 A151677 A304872 * A111338 A029457 A014859 Adjacent sequences:  A255918 A255919 A255920 * A255922 A255923 A255924 KEYWORD nonn AUTHOR Felix Fröhlich, Mar 11 2015 STATUS approved

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Last modified July 28 08:44 EDT 2021. Contains 346321 sequences. (Running on oeis4.)