Numbers whose square is the concatenation of two numbers k and k+9.

Terms

a(0) =465a(1) =536a(2) =718a(3) =822a(4) =3428a(5) =6573a(6) =90907a(7) =980202a(8) =3636361a(9) =6363640a(10) =41176468a(11) =58823533a(12) =413533838a(13) =426573430a(14) =428571426a(15) =432620009a(16) =567379992a(17) =571428575a(18) =573426571a(19) =586466163a(20) =686261111a(21) =725274729a(22) =727272725a(23) =731321308