# A307442 (b-file synthesized from sequence entry)
0 1
1 2
2 9
3 54
4 379
5 2948
6 24736
7 220622
8 2074775
9 20491386
10 212312349
11 2310232488
12 26473612772
13 320735694048
14 4126350096188
15 56601987176510
16 830233489763775
17 13036492313617494
18 218958840306428947
19 3924128327446669670
20 74779561501535316579
21 1509296316416028136188