# A178869 (b-file synthesized from sequence entry)
0 0
1 1
2 9
3 71
4 549
5 4231
6 32589
7 250991
8 1933029
9 14887351
10 114655869
11 883029311
12 6800705109
13 52376052871
14 403377424749
15 3106636294031
16 23925952398789
17 184267208648791
18 1419145353851229
19 10929636098173151
20 84175271345046069