n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 38 |
5 | 127 |
6 | 498 |
7 | 1863 |
8 | 7543 |
9 | 29856 |
10 | 124254 |
11 | 509212 |
12 | 2164118 |
13 | 9089475 |
14 | 39239286 |
15 | 167827362 |
16 | 733433910 |
17 | 3180579412 |
18 | 14038447686 |
19 | 61547774679 |
20 | 273888893696 |
21 | 1211561695921 |
22 | 5428227733799 |
23 | 24191188359499 |
24 | 109009188494274 |
25 | 488859750270041 |
26 | 2213761086799447 |
27 | 9981081059614057 |
[1,1,4,10,38,127,498,1863,7543,29856,124254, 509212,2164118,9089475,39239286,167827362, 733433910,3180579412,14038447686,61547774679, 273888893696,1211561695921,5428227733799, 24191188359499,109009188494274,488859750270041, 2213761086799447,9981081059614057] |