# A148173 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 12
5 27
6 84
7 224
8 712
9 2006
10 6662
11 19530
12 66075
13 200135
14 685767
15 2140539
16 7392879
17 23476786
18 82121415
19 264696045
20 931959429
21 3044412236
22 10778956363
23 35653064603
24 126785519562
25 422881232793
26 1512592426073
27 5085508697560
28 18251871593345
29 61808600080037
30 222558094522429
31 758833465387375