n | a(n) |
---|---|
1 | 2 |
2 | 7 |
3 | 22 |
4 | 75 |
5 | 298 |
6 | 1409 |
7 | 7900 |
8 | 52021 |
9 | 397756 |
10 | 3468667 |
11 | 33656220 |
12 | 354326769 |
13 | 3970080798 |
14 | 46804154165 |
15 | 577838630958 |
16 | 7468797926219 |
17 | 101264140457250 |
18 | 1443524097355225 |
19 | 21670184170964846 |
20 | 342875871451985761 |
[2,7,22,75,298,1409,7900,52021,397756,3468667, 33656220,354326769,3970080798,46804154165, 577838630958,7468797926219,101264140457250, 1443524097355225,21670184170964846, 342875871451985761] |