A020235 Strong pseudoprimes to base 9.

91, 121, 671, 703, 1541, 1729, 1891, 2821, 3281, 3367, 3751, 5551, 7381, 8401, 8911, 10585, 11011, 12403, 14383, 15203, 16471, 16531, 18721, 19345, 23521, 24661, 24727, 28009, 29341, 30857, 31621, 32791, 38503, 44287, 46999, 47197, 49051, 49141, 53131

Offset: 1

Author

David W. Wilson

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..369 from R. J. Mathar)
• Eric Weisstein's World of Mathematics, Strong Pseudoprime
• Index entries for sequences related to pseudoprimes

Crossrefs

Cf. A020138, A020229 (base 3), A020307 (base 81).