n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 8 |
5 | 29 |
6 | 91 |
7 | 289 |
8 | 1009 |
9 | 3706 |
10 | 13606 |
11 | 49822 |
12 | 184726 |
13 | 696052 |
14 | 2648746 |
15 | 10132072 |
16 | 38952970 |
17 | 150635860 |
18 | 585724594 |
19 | 2287631614 |
20 | 8968247626 |
21 | 35281363830 |
22 | 139256375922 |
23 | 551306272137 |
24 | 2188516471579 |
25 | 8709331962133 |
26 | 34739262293455 |
27 | 138863195368540 |
[1,1,1,2,8,29,91,289,1009,3706,13606,49822,184726, 696052,2648746,10132072,38952970,150635860, 585724594,2287631614,8968247626,35281363830, 139256375922,551306272137,2188516471579, 8709331962133,34739262293455,138863195368540] |