Squares mod 41.

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =5a(5) =8a(6) =9a(7) =10a(8) =16a(9) =18a(10) =20a(11) =21a(12) =23a(13) =25a(14) =31a(15) =32a(16) =33a(17) =36a(18) =37a(19) =39a(20) =40