n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 9 |
4 | 32 |
5 | 125 |
6 | 450 |
7 | 1715 |
8 | 6400 |
9 | 24300 |
10 | 92250 |
11 | 352715 |
12 | 1351584 |
13 | 5200299 |
14 | 20056582 |
15 | 77558625 |
16 | 300533760 |
17 | 1166803109 |
18 | 4537542888 |
19 | 17672631899 |
20 | 68923172000 |
21 | 269128935495 |
22 | 1052049129142 |
23 | 4116715363799 |
24 | 16123800483072 |
[1,1,2,9,32,125,450,1715,6400,24300,92250,352715, 1351584,5200299,20056582,77558625,300533760, 1166803109,4537542888,17672631899,68923172000, 269128935495,1052049129142,4116715363799, 16123800483072] |