Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 20 |
3 | 65 |
4 | 190 |
5 | 505 |
6 | 1260 |
7 | 2970 |
8 | 6700 |
9 | 14535 |
10 | 30520 |
11 | 62235 |
12 | 123720 |
13 | 240340 |
14 | 457380 |
15 | 854190 |
16 | 1568230 |
17 | 2834120 |
18 | 5048140 |
19 | 8871450 |
20 | 15396690 |
21 | 26410860 |
22 | 44811440 |
23 | 75254240 |
24 | 125162100 |
25 | 206275505 |
26 | 337032360 |
27 | 546183425 |
28 | 878270360 |
29 | 1401857550 |
30 | 2221862260 |
[1,5,20,65,190,505,1260,2970,6700,14535,30520, 62235,123720,240340,457380,854190,1568230,2834120, 5048140,8871450,15396690,26410860,44811440, 75254240,125162100,206275505,337032360,546183425, 878270360,1401857550,2221862260] |