Numbers n such that n^3 has n as its middle digits.

Terms

a(0) =1a(1) =50a(2) =56a(3) =60a(4) =90a(5) =4900a(6) =5100a(7) =7500a(8) =7600a(9) =9900a(10) =12500a(11) =499000a(12) =501000a(13) =624000a(14) =625000a(15) =749000a(16) =751000a(17) =875000a(18) =999000a(19) =1249000a(20) =13427757a(21) =49990000a(22) =50010000a(23) =56250000a(24) =62490000