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1,1
Composite numbers n such that 75^(n-1) == 1 (mod n).
T. D. Noe, Table of n, a(n) for n = 1..1000
Index entries for sequences related to pseudoprimes
base = 75; t = {}; n = 1; While[Length[t] < 100, n++; If[! PrimeQ[n] && PowerMod[base, n-1, n] == 1, AppendTo[t, n]]]; t (* T. D. Noe, Feb 21 2012 *)
Cf. A001567 (pseudoprimes to base 2).
Sequence in context: A095569 A305265 A055111 * A295158 A039484 A098516
Adjacent sequences: A020200 A020201 A020202 * A020204 A020205 A020206
nonn
David W. Wilson
approved