n | a(n) |
---|---|
1 | 3 |
2 | 12 |
3 | 50 |
4 | 108 |
5 | 260 |
6 | 542 |
7 | 1126 |
8 | 2230 |
9 | 4336 |
10 | 8246 |
11 | 15458 |
12 | 28608 |
13 | 52420 |
14 | 95240 |
15 | 171814 |
16 | 308056 |
17 | 549384 |
18 | 975130 |
19 | 1723482 |
20 | 3034498 |
21 | 5324180 |
22 | 9311762 |
23 | 16238070 |
[3,12,50,108,260,542,1126,2230,4336,8246,15458, 28608,52420,95240,171814,308056,549384,975130, 1723482,3034498,5324180,9311762,16238070] |