n | a(n) |
---|---|
4 | 6 |
5 | 12 |
6 | 38 |
7 | 104 |
8 | 300 |
9 | 856 |
10 | 2464 |
11 | 7104 |
12 | 20550 |
13 | 59580 |
14 | 173118 |
15 | 503960 |
16 | 1469546 |
17 | 4291644 |
18 | 12550290 |
19 | 36746592 |
20 | 107712306 |
21 | 316050372 |
22 | 928224594 |
23 | 2728494360 |
24 | 8026707864 |
25 | 23630376000 |
26 | 69614498268 |
27 | 205212650272 |
28 | 605292727450 |
29 | 1786351811556 |
[6,12,38,104,300,856,2464,7104,20550,59580,173118, 503960,1469546,4291644,12550290,36746592, 107712306,316050372,928224594,2728494360, 8026707864,23630376000,69614498268,205212650272, 605292727450,1786351811556] |