# A149733 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 75
5 303
6 1337
7 5943
8 26723
9 122153
10 563311
11 2617471
12 12248479
13 57586121
14 272366507
15 1292397415
16 6155702591
17 29418323033
18 140956169741
19 677110012143
20 3259741590865
21 15725222821637
22 75996265503789
23 367860874886273
24 1783400454302755
25 8657720979324607
26 42082514061246075
27 204790232187422719