# A026949 (b-file synthesized from sequence entry)
3 1
4 12
5 83
6 630
7 3171
8 21672
9 97482
10 639180
11 2730615
12 17543196
13 72932904
14 463291920
15 1895949055
16 11961944400
17 48478715240
18 304543085040
19 1226501910315
20 7682898791700
21 30811853728475
22 192632866196694
23 770315837004637
24 4809438625979592
25 19193549752057758
26 119719958370912900