# A083384 (b-file synthesized from sequence entry)
1 0
2 2
3 27
4 316
5 3825
6 49866
7 706923
8 10899512
9 182218005
10 3289724710
11 63865092159
12 1327750936788
13 29447495757225
14 694257067232834
15 17343019158929235
16 457695211932767344
17 12726295039220109885
18 371902424983010438238
19 11396594412860395106151
20 365458808048854606362380