Number of squares mod n.

Terms

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