Numbers k such that 2*k^2 - 9 is a square.

Terms

a(0) =3a(1) =15a(2) =87a(3) =507a(4) =2955a(5) =17223a(6) =100383a(7) =585075a(8) =3410067a(9) =19875327a(10) =115841895a(11) =675176043a(12) =3935214363a(13) =22936110135a(14) =133681446447a(15) =779152568547