Numbers y such that 19*y^2 + 81 is a square.

Terms

a(0) =0a(1) =1a(2) =15a(3) =24a(4) =220a(5) =351a(6) =560a(7) =5124a(8) =8175a(9) =74801a(10) =119340a(11) =190399a(12) =1742145a(13) =2779476a(14) =25432120a(15) =40575249a(16) =64735100a(17) =592324176a(18) =945013665a(19) =8646845999a(20) =13795465320a(21) =22009743601a(22) =201388477695a(23) =321301866624