# A150780 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 30
4 133
5 566
6 2617
7 11763
8 55530
9 256938
10 1227867
11 5781928
12 27850891
13 132672582
14 642602461
15 3085978055
16 15007566746
17 72497656217
18 353657229891
19 1716074631939
20 8391740124484
21 40861709568748
22 200210893873034
23 977590879486953
24 4797722906700485
25 23479286547998069
26 115387185124601996