A100904 Numbers k such that (10^k+1)^2-2 is prime.

22, 351, 1061, 410997

Offset

1,1

Links

Table of n, a(n) for n=1..4.

Steven Harvey, Carol and Kynea Primes.

Prog

(PARI) is(n)=ispseudoprime((10^n+1)^2-2) \\ Charles R Greathouse IV, Feb 19 2016

Crossrefs

Sequence in context: A096047 A016320 A103722 * A036738 A332855 A054940

Adjacent sequences: A100901 A100902 A100903 * A100905 A100906 A100907

Keyword

nonn,more

Author

Ray Chandler, Nov 21 2004

Extensions

a(4) from Ryan Propper, Feb 21 2024

Status

approved