# A121124 (b-file synthesized from sequence entry)
2 1
3 4
4 21
5 138
6 864
7 5526
8 34992
9 221724
10 1399680
11 8818632
12 55427328
13 347684400
14 2176782336
15 13604912928
16 84894511104
17 528958247616
18 3291294892032
19 20453047668864
20 126949945835520
21 787089669219072
22 4874877920083968
23 30163307160752640
24 186464080443211776
25 1151689908801235968