# A013318 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 3
4 24
5 165
6 1202
7 12663
8 149744
9 1945065
10 29307362
11 489387723
12 8915702664
13 178036818765
14 3852374482322
15 89628609049983
16 2235770536642784
17 59498096957789265
18 1681835781220294082