Squares that become cubes when their rightmost digit is removed.

Terms

a(0) =1a(1) =4a(2) =9a(3) =16a(4) =81a(5) =10000a(6) =640000a(7) =7290000a(8) =40960000a(9) =156250000a(10) =188210961a(11) =466560000a(12) =1176490000a(13) =2621440000a(14) =5314410000a(15) =10000000000a(16) =17715610000a(17) =29859840000a(18) =48268090000a(19) =75295360000a(20) =113906250000a(21) =167772160000a(22) =241375690000a(23) =340122240000a(24) =470458810000