Squares mod 66.

Terms

a(0) =0a(1) =1a(2) =3a(3) =4a(4) =9a(5) =12a(6) =15a(7) =16a(8) =22a(9) =25a(10) =27a(11) =31a(12) =33a(13) =34a(14) =36a(15) =37a(16) =42a(17) =45a(18) =48a(19) =49a(20) =55a(21) =58a(22) =60a(23) =64