# A047133 (b-file synthesized from sequence entry)
1 1
2 2
3 5
4 14
5 28
6 84
7 272
8 1679
9 5564
10 19613
11 70504
12 311534
13 1172750
14 4405073
15 16581264
16 67108040
17 260573610
18 1004778126
19 3867996120
20 15289911196
21 59854486782
22 233437968413
23 909025875014
24 3575067252387
25 14038457059264