A215565 Strong pseudoprimes to base 3 of the form 6*k-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

Adjacent sequences: A215562 A215563 A215564 * A215566 A215567 A215568

Keyword

nonn

Author

M. F. Hasler, Aug 16 2012

Status

approved