# A004350 (b-file synthesized from sequence entry)
8 1
9 45
10 1225
11 26235
12 487635
13 8259888
14 131115985
15 1984829850
16 28987537150
17 411731930610
18 5720645481903
19 78083581816435
20 1050421051106700
21 13961746143269400
22 183712472698171725
23 2396826047070372396