# A222014 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 9
4 54
5 392
6 3264
7 30375
8 311482
9 3492134
10 42613740
11 564395954
12 8094807168
13 125423821396
14 2093539627292
15 37521869868373
16 719483654260090
17 14705046942685816
18 319171681858506880
19 7331367124418082012
20 177646903957002411656
21 4527740283395695051578