# A018192 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 11
5 70
6 607
7 6577
8 85198
9 1276563
10 21695178
11 412195167
12 8656676654
13 199125735965
14 4978810781633
15 134447283590269
16 3899543151272530
17 120903273575624821
18 3990362191131712939
19 139681113828269665499
20 5168844439275046565329