n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 8 |
3 | 24 |
4 | 84 |
5 | 276 |
6 | 880 |
7 | 3063 |
8 | 10692 |
9 | 36257 |
10 | 121580 |
11 | 436847 |
12 | 1530534 |
13 | 5259906 |
14 | 18389910 |
15 | 65748491 |
16 | 230935493 |
17 | 799429185 |
18 | 2860613606 |
19 | 10203350814 |
20 | 35899202776 |
21 | 125660232367 |
22 | 453360413253 |
23 | 1614905346286 |
24 | 5688690345179 |
25 | 20241845359246 |
26 | 72805688610204 |
[1,3,8,24,84,276,880,3063,10692,36257,121580, 436847,1530534,5259906,18389910,65748491, 230935493,799429185,2860613606,10203350814, 35899202776,125660232367,453360413253, 1614905346286,5688690345179,20241845359246, 72805688610204] |