(2, 1) = 2
(2, 2) = 2^2
(2, 3) = 2^2*2
(2, 4) = 2^2^2
(2, 5) = 2^2^2*2
(2, 6) = (2^2*2)^2
(2, 7) = (2^2*2)^2*2
(2, 8) = 2^2^2^2
(2, 9) = 2^2^2^2*2

1 =
2 = ^
3 = ^*
4 = ^^
5 = ^^*
6 = (^*)^
7 = (^*)^*
8 = ^^^^
9 = ^^^^*


즉 =0 ^=1, ^*=2 일때
1 = 0
2 = 1
3 = 2
4 = 11
5 = 12
6 = 21
7 = 22
8 = 1111
9 = 1112

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