# A126533 (b-file synthesized from sequence entry)
0 1
1 12
2 102
3 902
4 7982
5 70654
6 625402
7 5535834
8 49001208
9 433741054
10 3839319664
11 33984275534
12 300816572882
13 2662720010922
14 23569438972836
15 208628188925480
16 1846701623423840
17 16346337968616406
18 144691899110820286