A249180 Primes of the form p^q - 2q, where p and q are prime.

2, 5, 233, 337, 12161, 50647, 300757, 1594297, 18191441, 31855007, 46268273, 58863863, 86938301, 95443987, 124251493, 214921793, 410172401, 714924289, 849278117, 904231057, 1102302931, 1341919721, 1672446197, 2212245121, 2588282111, 2881473961, 2918076583, 3067586671, 3532642661, 3936827533, 4243659653, 4599141241

Offset

1,1

Comments

2 generated by (p = 2, q = 3), 5(3, 2), 233(3, 5), 337(7, 2), 12161(23, 3), 50647(37, 3), 300757(67, 3), 1594297(3, 13), ...

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..65

Example

2 = 2^3 - 2*3.

Prog

(PARI) is(n)=forprime(q=2, log(n)\log(2)+2, if(isprimepower(n+2*q)==q, return(isprime(n)))); 0 \\ Charles R Greathouse IV, Oct 22 2014

Crossrefs

Cf. A201310, A248602.

Sequence in context: A084297 A041873 A072118 * A135724 A137068 A137066

Adjacent sequences: A249177 A249178 A249179 * A249181 A249182 A249183

Keyword

nonn

Author

Juri-Stepan Gerasimov, Oct 22 2014

Extensions

a(9)-a(32) from Charles R Greathouse IV, Oct 22 2014

Status

approved