A221904 - OEIS

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A221904 as a simple table

n	a(n)
0	2
1	19
2	181
3	1729
4	16561
5	159049
6	1531441
7	14782969
8	143046721
9	1387420489
10	13486784401
11	131381059609
12	1282429536481
13	12541865828329
14	122876792454961
15	1205891132094649
16	11853020188851841

[2,19,181,1729,16561,159049,1531441,14782969, 143046721,1387420489,13486784401,131381059609, 1282429536481,12541865828329,122876792454961, 1205891132094649,11853020188851841]