# A375652 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 26
4 136
5 812
6 5494
7 41414
8 341800
9 3056984
10 29415274
11 302501498
12 3305797444
13 38212967444
14 465409979038
15 5951991056558
16 79686155008816
17 1113909729606896
18 16219814971477330
19 245503998889083362
20 3855373914424695196
21 62708526467241370892