# A151397 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 3
4 8
5 15
6 40
7 130
8 326
9 854
10 2812
11 8328
12 22849
13 72679
14 233635
15 686180
16 2131348
17 7032223
18 21948203
19 68247127
20 224907904
21 731136007
22 2315461477
23 7582271275
24 25158427804
25 81559484413
26 266864101260
27 891674092876
28 2948579481971
29 9706598328841
30 32479860131793
31 108816989575044
32 361744537905184