A020257 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A020257

Strong pseudoprimes to base 31.

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