# A016273 (b-file synthesized from sequence entry)
0 1
1 10
2 69
3 410
4 2261
5 11970
6 61909
7 315850
8 1598421
9 8050130
10 40425749
11 202656090
12 1014866581
13 5079099490
14 25409813589
15 127092049130
16 635589254741
17 3178333432050
18 15892828897429
19 79467630222970
20 397348609370901
21 1986774423719810
22 9933966253389269