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A020281 Strong pseudoprimes to base 55. 1
9, 27, 1027, 1387, 1513, 4033, 6533, 9773, 10649, 19513, 20491, 20797, 27613, 28009, 28939, 29891, 31021, 38503, 43877, 55981, 56033, 74971, 80137, 82513, 83333, 91001, 92101, 112471, 113491, 117569, 128627, 130759, 147109, 158701, 164609, 164917 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. J. Mathar, Table of n, a(n) for n = 1..300

Index entries for sequences related to pseudoprimes

CROSSREFS

Sequence in context: A317027 A020254 A124396 * A075539 A225300 A053825

Adjacent sequences:  A020278 A020279 A020280 * A020282 A020283 A020284

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified October 22 05:29 EDT 2019. Contains 328315 sequences. (Running on oeis4.)