n3 + 2
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The sum of the first n cubed numbers is: [n*(n+1)/2]2 which is the same as the square of the sum of the first n numbers.
153 cubed is 3581577. And the sum of one number is itself.
The sum of the first n cubed numbers is the square of the nth triangular number.
2 cubed = 8 8 cubed = 512
No.I think you mean "Is the number 2 a cubic number?" meaning, "Is there any number cubed that will equal 2?".The first cubic number is 1 (13), then 8 (23). So the cubic numbers skip straight past 2.But really if you're asking "Is 2 a cubed number?", then yes it can be. A cubed number would just suggest, "can you cube the number 2"? And yes, 2 cubed = 8.