n | a(n) |
---|---|
4 | 4 |
5 | 28 |
6 | 176 |
7 | 1258 |
8 | 10070 |
9 | 90692 |
10 | 907184 |
11 | 9979181 |
12 | 119750111 |
13 | 1556754911 |
14 | 21794572379 |
15 | 326918591535 |
16 | 5230697470143 |
17 | 88921857013919 |
18 | 1600593426385151 |
19 | 30411275101997759 |
20 | 608225502043759679 |
[4,28,176,1258,10070,90692,907184,9979181, 119750111,1556754911,21794572379,326918591535, 5230697470143,88921857013919,1600593426385151, 30411275101997759,608225502043759679] |