1,1

All sequence members end in '59' since x must be divisible by 10 (30 actually).

Table of n, a(n) for n=1..25.

59=0^2+59, 59 and 61 are prime.

108959=330^2+59, 108959 and 108961 are prime.

Select[(30*Range[0, 2000])^2+59, PrimeQ[#]&&PrimeQ[#+2]&] (* Harvey P. Dale, Apr 14 2012 *)

Sequence in context: A258269 A094489 A235215 * A191947 A188269 A093403

Adjacent sequences: A178063 A178064 A178065 * A178067 A178068 A178069

nonn

John L. Drost, Dec 16 2010

More terms from Harvey P. Dale, Apr 14 2012

approved