Nonnegative integers n such that 2n^2 + 2n - 3 is square.

Terms

a(0) =1a(1) =2a(2) =6a(3) =13a(4) =37a(5) =78a(6) =218a(7) =457a(8) =1273a(9) =2666a(10) =7422a(11) =15541a(12) =43261a(13) =90582a(14) =252146a(15) =527953a(16) =1469617a(17) =3077138a(18) =8565558a(19) =17934877a(20) =49923733a(21) =104532126a(22) =290976842a(23) =609257881a(24) =1695937321a(25) =3551015162a(26) =9884647086a(27) =20696833093a(28) =57611945197a(29) =120629983398