Some Interesting Numbers
N N2 N3 N! 2N
1 1 1 1 2
2 4 8 2 4
3 9 27 6 8
4 16 64 24 16
5 25 125 120 32
6 36 216 720 64
7 49 343 5040 128
8 64 512 40320 256
9 81 729 362880 512