Numbers k such that for any positive integers a < b, if a * b = k then b - a is a square.

Terms

a(0) =0a(1) =1a(2) =2a(3) =5a(4) =17a(5) =37a(6) =101a(7) =197a(8) =257a(9) =401a(10) =577a(11) =677a(12) =901a(13) =1297a(14) =1601a(15) =2917a(16) =3137a(17) =4357a(18) =5477a(19) =7057a(20) =8101a(21) =8837a(22) =10001a(23) =12101a(24) =13457a(25) =14401a(26) =15377a(27) =15877a(28) =16901a(29) =17957