# A177181 (b-file synthesized from sequence entry)
0 1
1 6
2 9
3 50
4 203
5 1081
6 5491
7 30100
8 165841
9 941019
10 5401905
11 31489071
12 185415573
13 1102594901
14 6608330597
15 39889119774
16 242247852507
17 1479208979061
18 9075878125131
19 55927537029301
20 345980015040103
21 2147862197235447