# A026697 (b-file synthesized from sequence entry)
2 1
3 5
4 35
5 137
6 844
7 3237
8 19289
9 74075
10 435901
11 1681705
12 9840202
13 38142908
14 222555244
15 866299556
16 5047109045
17 19716828587
18 114778868635
19 449771556357
20 2617170238263
21 10282678191109
22 59821340594252
23 235568344161873