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A020230 Strong pseudoprimes to base 4. 2
341, 1387, 2047, 3277, 4033, 4371, 4681, 5461, 8321, 8911, 10261, 13747, 14491, 15709, 15841, 19951, 29341, 31621, 42799, 49141, 49981, 52633, 60787, 65077, 65281, 74665, 80581, 83333, 85489, 88357, 90751, 104653, 123251, 129921, 130561, 137149 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

R. J. Mathar, Table of n, a(n) for n = 1..229

Eric Weisstein's World of Mathematics, Strong Pseudoprime

Index entries for sequences related to pseudoprimes

CROSSREFS

Cf. A001262 (base 2), A020229 (base 3).

Sequence in context: A050217 A214305 A086837 * A087716 A084653 A143688

Adjacent sequences:  A020227 A020228 A020229 * A020231 A020232 A020233

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified December 5 21:40 EST 2016. Contains 278771 sequences.