# A225524 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 24
4 66
5 184
6 488
7 1248
8 3136
9 7776
10 18780
11 44880
12 105896
13 246124
14 567008
15 1293840
16 2920626
17 6545352
18 14555388
19 32115120
20 70421792
21 153451488
22 332314512
23 715843200
24 1534016392
25 3270661294
26 6941489040
27 14667591672
28 30859685088
29 64670865304
30 135011595856
31 280813639680