Least number expressible as a^2 + k b^2 with positive integers a,b, for each k=1,...,n.

Terms

a(0) =2a(1) =17a(2) =73a(3) =73a(4) =241a(5) =241a(6) =1009a(7) =1009a(8) =1009a(9) =1009a(10) =7561a(11) =7561a(12) =21961a(13) =32356a(14) =32356a(15) =32356a(16) =44641a(17) =44641a(18) =349924a(19) =349924a(20) =349924a(21) =349924a(22) =1399696a(23) =1399696a(24) =1399696a(25) =3027249a(26) =3027249a(27) =3027249a(28) =4349601a(29) =4349601