Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 21 |
4 | 60 |
5 | 216 |
6 | 540 |
7 | 1836 |
8 | 4320 |
9 | 14256 |
10 | 32400 |
11 | 104976 |
12 | 233280 |
13 | 746496 |
14 | 1632960 |
15 | 5178816 |
16 | 11197440 |
17 | 35271936 |
18 | 75582720 |
19 | 236825856 |
20 | 503884800 |
21 | 1572120576 |
22 | 3325639680 |
23 | 10339716096 |
24 | 21767823360 |
25 | 67480252416 |
26 | 141490851840 |
[1,5,21,60,216,540,1836,4320,14256,32400,104976, 233280,746496,1632960,5178816,11197440,35271936, 75582720,236825856,503884800,1572120576, 3325639680,10339716096,21767823360,67480252416, 141490851840] |