# A121297 (b-file synthesized from sequence entry)
10 11
11 14
12 21
13 39
14 78
15 211
16 1954
17 63163
18 17163259
19 316235916142
20 7475840758734855197
21 77068358083998565749275388634420
22 56080446471298599543571746837309517827424625680076701163