# A104779 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 21
5 57
6 182
7 565
8 1931
9 6670
10 24537
11 92337
12 364602
13 1477148
14 6219031
15 26875932
16 119930947
17 548688443
18 2580814003
19 12425175838
20 61302331782
21 309055818656