# A307595 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 27
4 156
5 1097
6 9054
7 85603
8 910840
9 10760273
10 139634314
11 1973272939
12 30150497652
13 495099175625
14 8692428215982
15 162444828319579
16 3218819701723504
17 67394536781529505
18 1486511667262146322
19 34446575597797488843
20 836556499627929889964
21 21244918075422301609817