n | a(n) |
---|---|
1 | 4 |
2 | 16 |
3 | 84 |
4 | 536 |
5 | 4004 |
6 | 34176 |
7 | 327604 |
8 | 3481096 |
9 | 40585284 |
10 | 514872176 |
11 | 7058605844 |
12 | 103969203576 |
13 | 1637182717924 |
14 | 27442553929696 |
15 | 487806792137844 |
16 | 9164718013496936 |
17 | 181446744138509444 |
18 | 3775570370986139856 |
[4,16,84,536,4004,34176,327604,3481096,40585284, 514872176,7058605844,103969203576,1637182717924, 27442553929696,487806792137844,9164718013496936, 181446744138509444,3775570370986139856] |