a(n) = least number not of form [ (a^2+b^2)/n ].

Terms

a(0) =3a(1) =3a(2) =7a(3) =19a(4) =15a(5) =23a(6) =54a(7) =187a(8) =166a(9) =167a(10) =136a(11) =329a(12) =115a(13) =369a(14) =647a(15) =323a(16) =630a(17) =287a(18) =6666a(19) =1583a(20) =2495a(21) =1439a(22) =2278a(23) =4223a(24) =4054a(25) =12959a(26) =10799a(27) =10143a(28) =13580a(29) =11231