# A074503 (b-file synthesized from sequence entry)
0 3
1 10
2 54
3 352
4 2418
5 16840
6 117714
7 823672
8 5765058
9 40354120
10 282476274
11 1977328792
12 13841291298
13 96889018600
14 678223089234
15 4747561542712
16 33232930635138
17 232630514118280
18 1628413598172594
19 11398895185897432