OFFSET
1,1
COMMENTS
All terms = 3 mod 8.
Corresponding p's: 5, 7, 11, 17, 19, 23, 29, 41, 43, 59, 61, 67, 71, 73, 83, 103, 107, 137, 173, 179, 181, 199, 223, 239, 241, 257, 269, 271, 281, 283, 311, 313, 331, 347, 367, 389, 397, 433, 467, 479, 509. From these, 43, 67, 1699, 3499, 4507, 5059 are themselves of form prime^2+18.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..5000
MATHEMATICA
Select[Table[Prime[x]^2+18, {x, 100}], PrimeQ]
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Dec 03 2011
STATUS
approved