# A150176 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 20
4 77
5 295
6 1205
7 4978
8 21019
9 89763
10 388922
11 1697329
12 7471691
13 33116255
14 147601615
15 661139219
16 2974954453
17 13437851384
18 60907445442
19 276943253976
20 1262774428532
21 5772438698793
22 26449029821837
23 121446337474291
24 558731084390151
25 2575170517482218
26 11888688646338115
27 54970745292086848