Least k such that n*(k^2)+n*k+1 is a square, or 0 if n is a square.

Terms

a(0) =0a(1) =3a(2) =7a(3) =0a(4) =8a(5) =4a(6) =15a(7) =2a(8) =0a(9) =3a(10) =39a(11) =1a(12) =7a(13) =3a(14) =7a(15) =0a(16) =8a(17) =4a(18) =8a(19) =2a(20) =15a(21) =4a(22) =335a(23) =1a(24) =0a(25) =15a(26) =415a(27) =2a(28) =32a(29) =3