Numbers k such that 19*k+1 is a square.

Terms

a(0) =0a(1) =17a(2) =21a(3) =72a(4) =80a(5) =165a(6) =177a(7) =296a(8) =312a(9) =465a(10) =485a(11) =672a(12) =696a(13) =917a(14) =945a(15) =1200a(16) =1232a(17) =1521a(18) =1557a(19) =1880a(20) =1920a(21) =2277a(22) =2321a(23) =2712a(24) =2760a(25) =3185a(26) =3237a(27) =3696a(28) =3752a(29) =4245