A204517(n)^2 = floor[A055859(n)/7]: Squares which written in base 7, with some digit appended, yield another square.
A204513
A204517(n)^2 = floor[A055859(n)/7]: Squares which written in base 7, with some digit appended, yield another square.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =9a(5) =36a(6) =289a(7) =2304a(8) =9216a(9) =73441a(10) =585225a(11) =2340900a(12) =18653761a(13) =148644864a(14) =594579456a(15) =4737981889a(16) =37755210249a(17) =151020840996
External references
- oeis: A204513