# A148213 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 13
5 31
6 89
7 263
8 849
9 2489
10 7948
11 26132
12 85913
13 276811
14 935850
15 3195236
16 10784937
17 36653147
18 127830808
19 444962432
20 1541290899
21 5409570385
22 19197622065
23 67828393121
24 240141102163
25 859491924151
26 3085139246610
27 11048840438098
28 39776670165439
29 144121126222677
30 522104131067377
31 1892475604692523