# A201967 (b-file synthesized from sequence entry)
0 1
1 2
2 7
3 20
4 60
5 178
6 529
7 1572
8 4671
9 13880
10 41244
11 122556
12 364173
13 1082134
14 3215543
15 9554932
16 28392320
17 84367302
18 250696021
19 744939016
20 2213573775
21 6577597296
22 19545219896
23 58078292664
24 172578671241
25 512814623178