n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 20 |
4 | 65 |
5 | 193 |
6 | 544 |
7 | 1489 |
8 | 4005 |
9 | 10660 |
10 | 28193 |
11 | 74273 |
12 | 195200 |
13 | 512257 |
14 | 1343077 |
15 | 3519412 |
16 | 9219105 |
17 | 24144289 |
18 | 63224096 |
19 | 165544721 |
20 | 433437125 |
21 | 1134810436 |
22 | 2971065025 |
23 | 7778499265 |
24 | 20364618240 |
25 | 53315655553 |
26 | 139582833989 |
[1,5,20,65,193,544,1489,4005,10660,28193,74273, 195200,512257,1343077,3519412,9219105,24144289, 63224096,165544721,433437125,1134810436, 2971065025,7778499265,20364618240,53315655553, 139582833989] |