Smallest k such that k^2 + 1 is divisible by A002144(n)^3.

Terms

a(0) =57a(1) =239a(2) =1985a(3) =10133a(4) =9466a(5) =11389a(6) =27590a(7) =51412a(8) =153765a(9) =344464a(10) =107551a(11) =296344a(12) =172078a(13) =432436a(14) =931837a(15) =753090a(16) =676541a(17) =2321221a(18) =2027724a(19) =3394758a(20) =1706203a(21) =4841182a(22) =1438398a(23) =2947125a(24) =398366a(25) =5657795a(26) =4942017a(27) =9400802a(28) =11906503