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A020226 Pseudoprimes to base 98. 1
9, 33, 45, 85, 99, 153, 165, 291, 451, 485, 561, 565, 765, 873, 1017, 1045, 1067, 1105, 1261, 1649, 1705, 1921, 2465, 2501, 2651, 2701, 2805, 3007, 3201, 3277, 3565, 3585, 3609, 3729, 4005, 4069, 4365, 5085, 5797, 6817, 7345, 7471, 7701, 8245, 8321, 8965 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Composite numbers n such that 98^(n-1) == 1 (mod n). - Michel Lagneau, Feb 18 2012

LINKS

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

Index entries for sequences related to pseudoprimes

MATHEMATICA

base = 98; 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: A287534 A145849 A111045 * A175440 A280405 A111351

Adjacent sequences:  A020223 A020224 A020225 * A020227 A020228 A020229

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified August 20 20:50 EDT 2019. Contains 326155 sequences. (Running on oeis4.)