# A377237 (b-file synthesized from sequence entry)
0 1
1 2
2 10
3 56
4 326
5 1936
6 11644
7 70672
8 431942
9 2654816
10 16392564
11 101611536
12 631938524
13 3941350816
14 24643020344
15 154415141152
16 969445760070
17 6096812777664
18 38401653547204
19 242213348616592
20 1529642560685684
21 9671100898555168
22 61208631472013256
23 387759384222157152