n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 14 |
3 | 78 |
4 | 396 |
5 | 1910 |
6 | 8916 |
7 | 40684 |
8 | 182552 |
9 | 808614 |
10 | 3545220 |
11 | 15414212 |
12 | 66556584 |
13 | 285707708 |
14 | 1220340296 |
15 | 5189913240 |
16 | 21988512304 |
17 | 92850096902 |
18 | 390913863012 |
19 | 1641450064084 |
20 | 6876023427080 |
21 | 28741451864916 |
22 | 119902111845208 |
23 | 499304732388968 |
24 | 2075821104461136 |
25 | 8617006998238300 |
[0,2,14,78,396,1910,8916,40684,182552,808614, 3545220,15414212,66556584,285707708,1220340296, 5189913240,21988512304,92850096902,390913863012, 1641450064084,6876023427080,28741451864916, 119902111845208,499304732388968,2075821104461136, 8617006998238300] |