Nonsquares mod 40.

Terms

a(0) =2a(1) =3a(2) =5a(3) =6a(4) =7a(5) =8a(6) =10a(7) =11a(8) =12a(9) =13a(10) =14a(11) =15a(12) =17a(13) =18a(14) =19a(15) =21a(16) =22a(17) =23a(18) =26a(19) =27a(20) =28a(21) =29a(22) =30a(23) =31a(24) =32a(25) =33a(26) =34a(27) =35a(28) =37a(29) =38