# A082678 (b-file synthesized from sequence entry)
1 0
2 1
3 15
4 173
5 1815
6 18172
7 177072
8 1695717
9 16046799
10 150557876
11 1403583192
12 13020620912
13 120319453072
14 1108357767441
15 10183814123055
16 93371810974677
17 854560447928127
18 7809223022293132
19 71269611577048224
20 649693587382657728