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A020195 Pseudoprimes to base 67. 1
6, 22, 33, 49, 51, 66, 85, 154, 165, 187, 217, 385, 561, 637, 682, 703, 946, 1045, 1078, 1105, 1309, 1519, 1705, 1729, 2047, 2209, 2245, 2465, 2701, 2805, 2821, 3165, 3201, 3565, 4123, 4165, 4566, 4631, 4774, 5005, 5214, 5611, 5797, 6119, 6369, 6601, 7633 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Composite numbers n such that 97^(n-1) == 1 (mod n).

LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000

Index entries for sequences related to pseudoprimes

MATHEMATICA

base = 67; 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 *)

CROSSREFS

Cf. A001567 (pseudoprimes to base 2).

Sequence in context: A035285 A069824 A015709 * A035134 A075799 A046392

Adjacent sequences:  A020192 A020193 A020194 * A020196 A020197 A020198

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified March 26 00:37 EDT 2019. Contains 321479 sequences. (Running on oeis4.)