# A003125 (b-file synthesized from sequence entry)
1 2
2 9
3 36
4 142
5 558
6 2189
7 8594
8 33796
9 133097
10 524743
11 2070466
12 8177715
13 32332378
14 127948218
15 506708043
16 2007924808
17 7960694208
18 31576775077
19 125313590701
20 497543433995
21 1976277486929
22 7852859853208
23 31214015140480
24 124106224171554