# A391985 (b-file synthesized from sequence entry)
0 1
1 3
2 9
3 27
4 105
5 459
6 2025
7 8667
8 36369
9 151875
10 636417
11 2679075
12 11308761
13 47779227
14 201873465
15 852827211
16 3602606625
17 15218565363
18 64287833841
19 271557920115
20 1146975813225
21 4843839405771
22 20453167820457
23 86349979376667
24 364495327886385
25 1538324367013539
26 6491258197134561