n | a(n) |
---|---|
1 | 0 |
2 | 3 |
3 | 5 |
4 | 16 |
5 | 41 |
6 | 105 |
7 | 288 |
8 | 735 |
9 | 1981 |
10 | 5156 |
11 | 13685 |
12 | 35973 |
13 | 94940 |
14 | 250271 |
15 | 659721 |
16 | 1739740 |
17 | 4585933 |
18 | 12092245 |
19 | 31878636 |
20 | 84050611 |
21 | 221594145 |
22 | 584232168 |
23 | 1540316025 |
[0,3,5,16,41,105,288,735,1981,5156,13685,35973, 94940,250271,659721,1739740,4585933,12092245, 31878636,84050611,221594145,584232168,1540316025] |