n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 25 |
5 | 87 |
6 | 287 |
7 | 993 |
8 | 3519 |
9 | 12525 |
10 | 45369 |
11 | 165519 |
12 | 608569 |
13 | 2253307 |
14 | 8386575 |
15 | 31370297 |
16 | 117834837 |
17 | 444258387 |
18 | 1680516731 |
19 | 6375706325 |
20 | 24253227159 |
21 | 92481509389 |
22 | 353417696625 |
23 | 1353280137975 |
24 | 5191349266275 |
25 | 19948136148837 |
26 | 76771074483837 |
27 | 295880290515411 |
28 | 1141860205058433 |
29 | 4412129801125275 |
[1,1,3,9,25,87,287,993,3519,12525,45369,165519, 608569,2253307,8386575,31370297,117834837, 444258387,1680516731,6375706325,24253227159, 92481509389,353417696625,1353280137975, 5191349266275,19948136148837,76771074483837, 295880290515411,1141860205058433,4412129801125275] |