Numbers k such that 16 plus the k-th triangular number is a perfect square.

A154146

Numbers k such that 16 plus the k-th triangular number is a perfect square.

Terms

    a(0) =0a(1) =14a(2) =17a(3) =87a(4) =104a(5) =510a(6) =609a(7) =2975a(8) =3552a(9) =17342a(10) =20705a(11) =101079a(12) =120680a(13) =589134a(14) =703377a(15) =3433727a(16) =4099584a(17) =20013230a(18) =23894129a(19) =116645655a(20) =139265192a(21) =679860702a(22) =811697025

External references