Numbers that are not the sum of 2 distinct nonzero squares.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =7a(6) =8a(7) =9a(8) =11a(9) =12a(10) =14a(11) =15a(12) =16a(13) =18a(14) =19a(15) =21a(16) =22a(17) =23a(18) =24a(19) =27a(20) =28a(21) =30a(22) =31a(23) =32a(24) =33a(25) =35a(26) =36a(27) =38a(28) =39a(29) =42