# A107508 (b-file synthesized from sequence entry)
0 1
1 312
2 18642
3 447096
4 6004674
5 53600248
6 353024594
7 1839267768
8 7960151810
9 29653889720
10 97649896786
11 290078713080
12 789747027394
13 1995416563064
14 4726400795090
15 10581459177016
16 22543374588930
17 45962181162040
18 90105620342738
19 170538349148024
20 312685497919938