# A256758 (b-file synthesized from sequence entry)
0 1
1 2
2 3
3 7
4 19
5 47
6 163
7 487
8 1307
9 2879
10 19683
11 59049
12 177147
13 531441
14 1594323
15 4782969
16 14348907
17 43046721
18 86093443
19 344373773
20 688747547
21 3486784401