n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 23 |
5 | 102 |
6 | 495 |
7 | 2549 |
8 | 13682 |
9 | 75714 |
10 | 428882 |
11 | 2474573 |
12 | 14492346 |
13 | 85926361 |
14 | 514763279 |
15 | 3111119358 |
16 | 18946375767 |
17 | 116147683902 |
18 | 716179441293 |
19 | 4438862153246 |
20 | 27638747494178 |
21 | 172805469880497 |
22 | 1084462349973559 |
23 | 6828717036765622 |
24 | 43132158190994223 |
25 | 273204023401012901 |
[1,1,2,6,23,102,495,2549,13682,75714,428882, 2474573,14492346,85926361,514763279,3111119358, 18946375767,116147683902,716179441293, 4438862153246,27638747494178,172805469880497, 1084462349973559,6828717036765622, 43132158190994223,273204023401012901] |