Numbers k such that the "inventory" A063850 of k is a perfect square.

Terms

a(0) =6a(1) =55a(2) =116a(3) =161a(4) =255a(5) =511a(6) =666a(7) =969a(8) =996a(9) =5311a(10) =9666a(11) =9999a(12) =12255a(13) =12525a(14) =12552a(15) =41199a(16) =41919a(17) =41991a(18) =54246a(19) =54264a(20) =54426a(21) =71177a(22) =71717a(23) =71771a(24) =72255a(25) =72525a(26) =72552a(27) =77117a(28) =77171a(29) =77711