# A037506 (b-file synthesized from sequence entry)
1 1
2 7
3 35
4 176
5 882
6 4410
7 22051
8 110257
9 551285
10 2756426
11 13782132
12 68910660
13 344553301
14 1722766507
15 8613832535
16 43069162676
17 215345813382
18 1076729066910
19 5383645334551
20 26918226672757
21 134591133363785
22 672955666818926