69
44
The 2nd square number is (2^2 = 4) and the 4th cube number is (4^3 = 64). Adding these together gives (4 + 64 = 68). Therefore, the sum of the 2nd square number and the 4th cube number is 68.
15² + 2³ = 225 + 8 = 233
13th square number = 169 2nd square number = 4 169 + 4 = 173
68
8 is the same as the sum of the digits of its cube, 512.
I think it will be 17. The sum of digits is 8, which is the cube of 2.
27, whose cube is 19683
a neon number is that where sum of cube of digits of a number is equal to the cube of number itself.
88
6
n3 + 11*n