# A026305 (b-file synthesized from sequence entry)
1 1
2 4
3 20
4 104
5 560
6 3080
7 17199
8 97120
9 553146
10 3171860
11 18288127
12 105922544
13 615820400
14 3591858480
15 21008159700
16 123169357728
17 723659556026
18 4259672761560
19 25115352874780
20 148302374872080
21 876876653336922
22 5191051724957736