Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 5 |
4 | 20 |
5 | 104 |
6 | 546 |
7 | 3066 |
8 | 17655 |
9 | 104555 |
10 | 630773 |
11 | 3867617 |
12 | 24020932 |
13 | 150827740 |
14 | 955808680 |
15 | 6105327912 |
16 | 39268000188 |
17 | 254093573088 |
18 | 1652984379150 |
19 | 10804631902350 |
20 | 70925539707330 |
21 | 467373389649870 |
22 | 3090558380977020 |
23 | 20501504119375500 |
24 | 136392970090612950 |
[1,1,5,20,104,546,3066,17655,104555,630773, 3867617,24020932,150827740,955808680,6105327912, 39268000188,254093573088,1652984379150, 10804631902350,70925539707330,467373389649870, 3090558380977020,20501504119375500, 136392970090612950] |