# A156095 (b-file synthesized from sequence entry)
0 1
1 11
2 61
3 361
4 2311
5 15401
6 104401
7 712531
8 4875781
9 33398201
10 228859951
11 1568486161
12 10750188961
13 73681909211
14 505020747661
15 3461456968201
16 23725161388951
17 162614629188281
18 1114577128871281
19 7639424974303651
20 52361396909490901