Squares that become prime numbers when prefixed with a 6.

Terms

a(0) =1a(1) =121a(2) =361a(3) =529a(4) =841a(5) =961a(6) =1681a(7) =2401a(8) =4489a(9) =5929a(10) =6889a(11) =8281a(12) =11449a(13) =16129a(14) =17161a(15) =17689a(16) =24649a(17) =28561a(18) =29929a(19) =32041a(20) =34969a(21) =39601a(22) =43681a(23) =48841a(24) =57121a(25) =61009a(26) =63001a(27) =64009a(28) =67081a(29) =73441