n | a(n) |
---|---|
0 | 0 |
1 | 4 |
2 | 21 |
3 | 143 |
4 | 1061 |
5 | 8363 |
6 | 68906 |
7 | 586081 |
8 | 5096876 |
9 | 45086079 |
10 | 404204977 |
11 | 3663002302 |
12 | 33489857205 |
13 | 308457624821 |
14 | 2858876213963 |
15 | 26639628671867 |
16 | 249393770611256 |
17 | 2344318816620308 |
18 | 22116397130086627 |
19 | 209317712988603747 |
20 | 1986761935284574233 |
21 | 18906449883457813088 |
22 | 180340017203297174362 |
[0,4,21,143,1061,8363,68906,586081,5096876, 45086079,404204977,3663002302,33489857205, 308457624821,2858876213963,26639628671867, 249393770611256,2344318816620308, 22116397130086627,209317712988603747, 1986761935284574233,18906449883457813088, 180340017203297174362] |