Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 4 |
5 | 10 |
6 | 20 |
7 | 35 |
8 | 616 |
9 | 5124 |
10 | 29520 |
11 | 138765 |
12 | 1312300 |
13 | 16576846 |
14 | 175795984 |
15 | 1539037955 |
16 | 15687832720 |
17 | 216382727240 |
18 | 3170822906976 |
19 | 42007311638169 |
20 | 553841577209940 |
21 | 8435274815148370 |
22 | 145708900713412960 |
23 | 2517047758252082671 |
24 | 42575155321545439384 |
[0,0,0,0,4,10,20,35,616,5124,29520,138765,1312300, 16576846,175795984,1539037955,15687832720, 216382727240,3170822906976,42007311638169, 553841577209940,8435274815148370, 145708900713412960,2517047758252082671, 42575155321545439384] |