# A057553 (b-file synthesized from sequence entry)
1 1
2 5
3 16
4 56
5 203
6 749
7 2795
8 10517
9 39832
10 151658
11 579956
12 2225964
13 8570330
14 33086030
15 128028650
16 496432760
17 1928418395
18 7503144365
19 29235705215
20 114064338335
21 445552419545
22 1742264571605
23 6819546853625
24 26717004445325