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A020257 Strong pseudoprimes to base 31. 1
15, 49, 133, 481, 931, 6241, 8911, 9131, 10963, 11041, 14191, 17767, 29341, 56033, 58969, 68251, 79003, 83333, 87061, 88183, 113527, 130561, 131407, 164737, 190861, 197209, 206981, 210337, 229633, 244949, 264223, 269011, 270943, 347263, 389777 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. J. Mathar, Table of n, a(n) for n = 1..698

Index entries for sequences related to pseudoprimes

CROSSREFS

Sequence in context: A272039 A241577 A199899 * A298511 A349855 A103777

Adjacent sequences: A020254 A020255 A020256 * A020258 A020259 A020260

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified February 8 23:03 EST 2023. Contains 360153 sequences. (Running on oeis4.)