# A304979 (b-file synthesized from sequence entry)
0 1
1 2
2 12
3 92
4 792
5 7302
6 70464
7 702536
8 7178568
9 74771570
10 790906012
11 8472417384
12 91724327928
13 1001987961834
14 11030476949952
15 122247789508992
16 1362840516623944
17 15272530735735338
18 171946029518128956
19 1943927810200670820
20 22059590401383177792
21 251183781609841838444