# A305304 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 9
4 52
5 405
6 3786
7 42301
8 542984
9 7924041
10 129110230
11 2327399481
12 45940938924
13 986045445853
14 22856850513602
15 569163515043285
16 15150885843083536
17 429364157810169105
18 12905794670246364078
19 410108007771441394129
20 13736898888997174964660
21 483740530150449507164901
22 17866185834825657429606682