Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 20 |
4 | 61 |
5 | 183 |
6 | 547 |
7 | 1640 |
8 | 4920 |
9 | 14762 |
10 | 44287 |
11 | 132861 |
12 | 398581 |
13 | 1195742 |
14 | 3587226 |
15 | 10761680 |
16 | 32285041 |
17 | 96855123 |
18 | 290565367 |
19 | 871696100 |
20 | 2615088300 |
21 | 7845264902 |
22 | 23535794707 |
23 | 70607384121 |
24 | 211822152361 |
25 | 635466457082 |
[1,2,6,20,61,183,547,1640,4920,14762,44287,132861, 398581,1195742,3587226,10761680,32285041,96855123, 290565367,871696100,2615088300,7845264902, 23535794707,70607384121,211822152361,635466457082] |