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A215565
Strong pseudoprimes to base 3 of the form 6*k-1.
1
3281, 432821, 973241, 1551941, 1683683, 1898999, 2202257, 2545181, 2586083, 2795519, 3020093, 3028133, 4042403, 4099439, 4561481, 4923521, 5087171, 5173601, 5193161, 5774801, 6710177, 8243111, 9846401
OFFSET
1,1
COMMENTS
Motivated by the fact that most strong pseudoprimes to base 3 (A020229) are of the form 6*k+1.
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..2621 (calculated from the b-file at A020229)
PROG
(PARI) forstep(n=5, 1e7, 6, is_A020229(n) & print1(n", "))
CROSSREFS
Cf. A020229.
Sequence in context: A022198 A203808 A359844 * A068755 A330253 A242862
KEYWORD
nonn
AUTHOR
M. F. Hasler, Aug 16 2012
STATUS
approved