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 A293512 Numbers k such that the smallest pseudoprime ( > k ) to base k, A007535(k), is a Carmichael number. 2
 348, 355, 358, 383, 388, 427, 448, 455, 478, 479, 485, 490, 491, 497, 499, 508, 509, 511, 515, 520, 521, 533, 535, 541, 545, 547, 551, 553, 556, 557, 559, 560, 679, 708, 759, 765, 777, 796, 807, 808, 822, 828, 838, 839, 847, 862, 891, 906, 928, 931, 933, 951 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 EXAMPLE 348 is the sequence since A007535(348) = 1105 is a Carmichael number. MATHEMATICA carmichaelQ[n_] := Divisible[n - 1, CarmichaelLambda[n]] && ! PrimeQ[n]; f[n_] := Block[{k = n}, While[GCD[n, k] > 1 || PrimeQ[k] || PowerMod[n, k - 1, k] != 1, j = k++]; k]; Select[Range[1000], carmichaelQ[f[#]] &] (* after Robert G. Wilson v at A090086 *) CROSSREFS Cf. A002997, A007535. Sequence in context: A185713 A264384 A323999 * A275237 A129642 A304837 Adjacent sequences: A293509 A293510 A293511 * A293513 A293514 A293515 KEYWORD nonn AUTHOR Amiram Eldar, Oct 12 2017 STATUS approved

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Last modified June 5 12:07 EDT 2023. Contains 363136 sequences. (Running on oeis4.)