# A151238 (b-file synthesized from sequence entry)
0 1
1 3
2 14
3 63
4 302
5 1440
6 7020
7 34175
8 167978
9 825688
10 4078284
11 20152606
12 99849580
13 494979560
14 2457666200
15 12208697151
16 60709727410
17 302015454120
18 1503479139724
19 7487167558122
20 37303246441268
21 185909155131480
22 926845403327304
23 4621854727637926
24 23053660002910820
25 115013127548121776