n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 22 |
5 | 86 |
6 | 338 |
7 | 1318 |
8 | 5110 |
9 | 19770 |
10 | 76466 |
11 | 295810 |
12 | 1144530 |
13 | 4428622 |
14 | 17136186 |
15 | 66306722 |
16 | 256565926 |
17 | 992749334 |
18 | 3841316550 |
19 | 14863484902 |
20 | 57512368162 |
21 | 222536820262 |
22 | 861078033110 |
23 | 3331832349354 |
24 | 12892103081874 |
25 | 49884359171762 |
[1,1,2,6,22,86,338,1318,5110,19770,76466,295810, 1144530,4428622,17136186,66306722,256565926, 992749334,3841316550,14863484902,57512368162, 222536820262,861078033110,3331832349354, 12892103081874,49884359171762] |