# A081616 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 1
4 9
5 69
6 510
7 3740
8 27454
9 202321
10 1498074
11 11145324
12 83291428
13 625022772
14 4707757080
15 35579447280
16 269718129308
17 2050317850201
18 15625047614946
19 119347362039788
20 913501931766460
21 7005437509949364
22 53817428069374328
23 414107216180618608