Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 3 |
6 | 19 |
7 | 63 |
8 | 175 |
9 | 501 |
10 | 1230 |
11 | 3086 |
12 | 7469 |
13 | 18402 |
14 | 44748 |
15 | 109787 |
16 | 269289 |
17 | 668521 |
18 | 1675317 |
19 | 4236270 |
[0,0,0,0,3,19,63,175,501,1230,3086,7469,18402, 44748,109787,269289,668521,1675317,4236270] |