# A186183 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 9
4 68
5 646
6 6857
7 77695
8 919642
9 11233858
10 140544189
11 1791614714
12 23187320736
13 303861373679
14 4023883823059
15 53762917329659
16 723854999871943
17 9811154512175468
18 133762940465746744
19 1833187046654598058
20 25239961633188882896