# A120997 (b-file synthesized from sequence entry)
0 1
1 9
2 81
3 729
4 6561
5 19683
6 177147
7 1594323
8 43046721
9 387420489
10 3486784401
11 31381059609
12 282429536481
13 2541865828329
14 2541865828329
15 22876792454961
16 205891132094649
17 5559060566555523
18 50031545098999707