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A020246 Strong pseudoprimes to base 20. 1
21, 671, 889, 1891, 2059, 2761, 5461, 7999, 13051, 15311, 16441, 21667, 25681, 34861, 37901, 38989, 42127, 49771, 50737, 54811, 64681, 68251, 78961, 85591, 88831, 92509, 93031, 96049, 97921, 105001, 109061, 111361, 114841, 123713, 143009, 145351 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. J. Mathar, Table of n, a(n) for n = 1..208

Index entries for sequences related to pseudoprimes

CROSSREFS

Sequence in context: A297312 A158216 A262960 * A239099 A006934 A211877

Adjacent sequences:  A020243 A020244 A020245 * A020247 A020248 A020249

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified January 22 04:27 EST 2020. Contains 331133 sequences. (Running on oeis4.)