# A097113 (b-file synthesized from sequence entry)
0 1
1 5
2 21
3 85
4 421
5 1445
6 8181
7 24565
8 155461
9 417605
10 2904981
11 7099285
12 53578981
13 120687845
14 977951541
15 2051693365
16 17698918021
17 34878787205
18 318061475541
19 592939382485
20 5681922991141
21 10079969502245
22 100990737360501