# A077507 (b-file synthesized from sequence entry)
1 1
2 28
3 378
4 4950
5 59685
6 699153
7 7998000
8 89987820
9 999961560
10 1099969156
11 11999870821
12 129999769851
13 1399999074540
14 14999999588925
15 159999994275696
16 1699999973850921
17 17999999979109470
18 189999999508759300
19 1999999999000000000
20 20999999994116393253