# A200151 (b-file synthesized from sequence entry)
1 1
2 6
3 18
4 66
5 202
6 730
7 2036
8 7488
9 19262
10 62772
11 190408
12 1077600
13 2185196
14 12081408
15 21927244
16 52980770
17 148851716
18 1353060240
19 2585159746
20 16942421808
21 28793485330
22 51092435876
23 106822624510
24 1565885020128