# A020029 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 18
5 85
6 499
7 3422
8 26889
9 238158
10 2347553
11 25487720
12 302211543
13 3885576978
14 53842995268
15 799953072548
16 12684970150411
17 213832353964067
18 3818434892215474
19 72004772253206073
20 1429809049027949160