a(n)^3 is smallest cube containing exactly n 0's.

Terms

a(0) =1a(1) =0a(2) =52a(3) =10a(4) =160a(5) =520a(6) =100a(7) =1600a(8) =5200a(9) =1000a(10) =16000a(11) =52000a(12) =10000a(13) =160000a(14) =520000a(15) =100000a(16) =1600000a(17) =5200000a(18) =1000000a(19) =16000000a(20) =52000000a(21) =10000000a(22) =160000000a(23) =520000000a(24) =100000000a(25) =1600000000a(26) =5200000000a(27) =1000000000