# A186576 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 20
5 72
6 274
7 1083
8 4402
9 18283
10 77248
11 330966
12 1434527
13 6278831
14 27712795
15 123203934
16 551208007
17 2479863162
18 11212189575
19 50918544674
20 232161960449
21 1062356169341
22 4877198070463
23 22457825237584
24 103693977154771