n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 5 |
3 | 19 |
4 | 60 |
5 | 182 |
6 | 546 |
7 | 1639 |
8 | 4919 |
9 | 14761 |
10 | 44286 |
11 | 132860 |
12 | 398580 |
13 | 1195741 |
14 | 3587225 |
15 | 10761679 |
16 | 32285040 |
17 | 96855122 |
18 | 290565366 |
19 | 871696099 |
20 | 2615088299 |
21 | 7845264901 |
22 | 23535794706 |
23 | 70607384120 |
24 | 211822152360 |
25 | 635466457081 |
[0,1,5,19,60,182,546,1639,4919,14761,44286,132860, 398580,1195741,3587225,10761679,32285040,96855122, 290565366,871696099,2615088299,7845264901, 23535794706,70607384120,211822152360,635466457081] |