Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 6 |
2 | 15 |
3 | 50 |
4 | 210 |
5 | 456 |
6 | 4220 |
7 | 6960 |
8 | 57330 |
9 | 188810 |
10 | 1518558 |
11 | 3302916 |
12 | 45916780 |
13 | 83747280 |
14 | 933074430 |
15 | 3920355200 |
16 | 22075393725 |
17 | 62230996500 |
18 | 940379117630 |
19 | 1781757016320 |
20 | 22856963695482 |
21 | 87052415634120 |
[6,15,50,210,456,4220,6960,57330,188810,1518558, 3302916,45916780,83747280,933074430,3920355200, 22075393725,62230996500,940379117630, 1781757016320,22856963695482,87052415634120] |