Squares k such that k + pi(k) is a prime.

Terms

a(0) =9a(1) =36a(2) =81a(3) =121a(4) =361a(5) =625a(6) =961a(7) =3136a(8) =6724a(9) =8281a(10) =9604a(11) =10609a(12) =12996a(13) =13225a(14) =19881a(15) =25281a(16) =38025a(17) =39204a(18) =40000a(19) =43264a(20) =44944a(21) =45796a(22) =47961a(23) =60516a(24) =64009a(25) =79524a(26) =80089a(27) =80656a(28) =83521a(29) =86436