Primes of the form k^2 + (k+1)^2 + (k+2)^2 = 3*(k+1)^2+2.

Terms

a(0) =5a(1) =29a(2) =149a(3) =509a(4) =677a(5) =1877a(6) =3677a(7) =8429a(8) =9749a(9) =11909a(10) =13469a(11) =17789a(12) =22709a(13) =27077a(14) =28229a(15) =45389a(16) =46877a(17) =53069a(18) =70229a(19) =72077a(20) =81677a(21) =100469a(22) =102677a(23) =114077a(24) =128549a(25) =141269a(26) =154589a(27) =180077a(28) =192029a(29) =195077