Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 0 |
2 | -1 |
3 | 12 |
4 | -80 |
5 | 1152 |
6 | -5632 |
7 | 61440 |
8 | -278528 |
9 | 2752512 |
10 | -42467328 |
11 | 182452224 |
12 | -2642411520 |
13 | 23555211264 |
14 | -99052683264 |
15 | 869730877440 |
16 | -11828339933184 |
17 | 158638912045056 |
18 | -656820758642688 |
19 | 8683393080360960 |
20 | -73742045851680768 |
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