Nonsquares mod 36.

Terms

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