A020245 Strong pseudoprimes to base 19.

9, 49, 169, 343, 1849, 2353, 2701, 4033, 4681, 6541, 6697, 7957, 9997, 12403, 13213, 13747, 15251, 16531, 18769, 19729, 24761, 30589, 31621, 31861, 32477, 41003, 49771, 63139, 64681, 65161, 66421, 68257, 73555, 96049, 102831, 118957, 129961, 137311

Offset: 1

Author

David W. Wilson

Keywords

• nonn

Links

• R. J. Mathar, Table of n, a(n) for n = 1..752
• Index entries for sequences related to pseudoprimes

Programs

PARI

/* with A001262 */
isA020245(n)={ isStrongPsp(n,19) }
{ for(n=1,300000000, if(isA020245(n), print(n) ;) ;) ;} /* R. J. Mathar, Mar 07 2012 */