A204512(n)^2 = floor[A055872(n)/8]: Squares such that appending some digit in base 8 yields another square.

A204504

A204512(n)^2 = floor[A055872(n)/8]: Squares such that appending some digit in base 8 yields another square.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =1a(4) =4a(5) =36a(6) =144a(7) =1225a(8) =4900a(9) =41616a(10) =166464a(11) =1413721a(12) =5654884a(13) =48024900a(14) =192099600a(15) =1631432881a(16) =6525731524a(17) =55420693056a(18) =221682772224

External references