n | a(n) |
---|---|
1 | 7 |
2 | 42 |
3 | 252 |
4 | 1470 |
5 | 8610 |
6 | 50190 |
7 | 292740 |
8 | 1706250 |
9 | 9946020 |
10 | 57970080 |
11 | 337883700 |
12 | 1969343880 |
13 | 11478292770 |
14 | 66900843240 |
15 | 389929523550 |
16 | 2272690998690 |
[7,42,252,1470,8610,50190,292740,1706250,9946020, 57970080,337883700,1969343880,11478292770, 66900843240,389929523550,2272690998690] |