# A301928 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 9
4 52
5 338
6 2429
7 18656
8 150974
9 1276421
10 11203817
11 101708780
12 952618462
13 9192058947
14 91313739683
15 933740464780
16 9830917830954
17 106627370291103
18 1192178247304598
19 13750270811493561
20 163695850973969924
21 2012316205222767445
22 25547555377097621270
23 334912223771236381521
24 4531556478213917470110