

A182313


Primes of form a^2+b^2 such that a^4+b^4 and a^8+b^8 are primes.


2



2, 5, 17, 1277, 2129, 3413, 4157, 4637, 7481, 7573, 7717, 14561, 15233, 19469, 19889, 20549, 20693, 20749, 22721, 23609, 23869, 24841, 27701, 29629, 31153, 35869, 41081, 42209, 42577, 44417, 45233, 46061, 51613, 51713, 52069, 53197, 54493, 55589, 55921, 56489
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OFFSET

1,1


LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000


PROG

(PARI) list(lim)=my(v=List([2]), t); for(a=1, sqrt(lim), forstep(b=1+a%2, min(a, sqrt(lima^2)), 2, if(isprime(t=a^2+b^2) && isprime(a^4+b^4) && isprime(a^8+b^8), listput(v, t)))); vecsort(Vec(v)) \\ Charles R Greathouse IV, Apr 24 2012


CROSSREFS

Subsequence of A182198.
Sequence in context: A081465 A128000 A281312 * A124374 A113617 A226069
Adjacent sequences: A182310 A182311 A182312 * A182314 A182315 A182316


KEYWORD

nonn


AUTHOR

Thomas Ordowski, Apr 24 2012


EXTENSIONS

a(4)a(40) from Charles R Greathouse IV, Apr 24 2012


STATUS

approved



