n | a(n) |
---|---|
3 | 1 |
4 | 9 |
5 | 175 |
6 | 1518 |
7 | 8735 |
8 | 39130 |
9 | 148487 |
10 | 502415 |
11 | 1568062 |
12 | 4622488 |
13 | 13091798 |
14 | 36067176 |
15 | 97522270 |
16 | 260459265 |
17 | 690141333 |
18 | 1819657318 |
19 | 4783398669 |
20 | 12551942930 |
21 | 32903246829 |
22 | 86201363911 |
23 | 225761428636 |
24 | 591165917888 |
25 | 1547848480940 |
26 | 4052529200192 |
27 | 10609936578716 |
28 | 27777538280521 |
[1,9,175,1518,8735,39130,148487,502415,1568062, 4622488,13091798,36067176,97522270,260459265, 690141333,1819657318,4783398669,12551942930, 32903246829,86201363911,225761428636,591165917888, 1547848480940,4052529200192,10609936578716, 27777538280521] |