Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 10 |
5 | 30 |
6 | 180 |
7 | 585 |
8 | 1430 |
9 | 3575 |
10 | 9100 |
11 | 31850 |
12 | 83300 |
13 | 220150 |
14 | 792540 |
15 | 11888100 |
16 | 32167800 |
17 | 87567900 |
18 | 1576222200 |
19 | 4334611050 |
20 | 11971782900 |
21 | 33194488950 |
22 | 92367273600 |
23 | 257858638800 |
24 | 722004188640 |
25 | 18050104716000 |
[1,1,2,5,10,30,180,585,1430,3575,9100,31850,83300, 220150,792540,11888100,32167800,87567900, 1576222200,4334611050,11971782900,33194488950, 92367273600,257858638800,722004188640, 18050104716000] |