# A273893 (b-file synthesized from sequence entry)
0 1
1 3
2 9
3 9
4 81
5 243
6 243
7 2187
8 6561
9 2187
10 59049
11 177147
12 177147
13 1594323
14 4782969
15 4782969
16 43046721
17 129140163
18 43046721
19 1162261467
20 3486784401
21 3486784401
22 31381059609
23 94143178827
24 94143178827
25 847288609443
26 2541865828329
27 282429536481
28 22876792454961