n | a(n) |
---|---|
0 | 2 |
1 | 8 |
2 | 31 |
3 | 120 |
4 | 464 |
5 | 1794 |
6 | 6936 |
7 | 26816 |
8 | 103676 |
9 | 400832 |
10 | 1549696 |
11 | 5991432 |
12 | 23164064 |
13 | 89556864 |
14 | 346244592 |
15 | 1338650240 |
16 | 5175487232 |
17 | 20009459744 |
18 | 77360538496 |
19 | 299091179520 |
20 | 1156345798592 |
21 | 4470662117376 |
22 | 17284466110464 |
23 | 66825172844672 |
[2,8,31,120,464,1794,6936,26816,103676,400832, 1549696,5991432,23164064,89556864,346244592, 1338650240,5175487232,20009459744,77360538496, 299091179520,1156345798592,4470662117376, 17284466110464,66825172844672] |