# A205498 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 16
5 63
6 329
7 2291
8 21986
9 293295
10 5493212
11 145199609
12 5435890215
13 288986265721
14 21854960540507
15 2354333160724935
16 361635116847622331
17 79267245693976433777
18 24809117584333459025386
19 11092978451251892467436829
20 7089163369051891054753027252