n | a(n) |
---|---|
1 | 1 |
2 | 21 |
3 | 176 |
4 | 936 |
5 | 3750 |
6 | 12342 |
7 | 35112 |
8 | 89232 |
9 | 207207 |
10 | 446875 |
11 | 906048 |
12 | 1743248 |
13 | 3206268 |
14 | 5670588 |
15 | 9690000 |
16 | 16062144 |
17 | 25912029 |
18 | 40797009 |
19 | 62837104 |
20 | 94875000 |
21 | 140670530 |
22 | 205134930 |
23 | 294610680 |
24 | 417203280 |
25 | 583171875 |
26 | 805386231 |
[1,21,176,936,3750,12342,35112,89232,207207, 446875,906048,1743248,3206268,5670588,9690000, 16062144,25912029,40797009,62837104,94875000, 140670530,205134930,294610680,417203280,583171875, 805386231] |