# A355511 (b-file synthesized from sequence entry)
0 0
1 0
2 55
3 440
4 5170
5 56408
6 620950
7 6830120
8 75131485
9 826446280
10 9090909091
11 100000000000
12 1100000000000
13 12100000000000
14 133100000000000
15 1464100000000000
16 16105100000000000
17 177156100000000000
18 1948717100000000000
19 21435888100000000000
20 235794769100000000000