Squares mod 75.

Terms

a(0) =0a(1) =1a(2) =4a(3) =6a(4) =9a(5) =16a(6) =19a(7) =21a(8) =24a(9) =25a(10) =31a(11) =34a(12) =36a(13) =39a(14) =46a(15) =49a(16) =51a(17) =54a(18) =61a(19) =64a(20) =66a(21) =69