# A065693 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 28
4 271
5 1567
6 6616
7 21925
8 60481
9 164836
10 627751
11 3355183
12 18052336
13 84393037
14 338279761
15 1198269100
16 4009627711
17 14134316671
18 57201128776
19 256878349813
20 1159252365601
21 4930744442932
22 19479046111831