Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | -1 |
3 | 4 |
4 | -7 |
5 | 19 |
6 | -40 |
7 | 97 |
8 | -217 |
9 | 508 |
10 | -1159 |
11 | 2683 |
12 | -6160 |
13 | 14209 |
14 | -32689 |
15 | 75316 |
16 | -173383 |
17 | 399331 |
18 | -919480 |
19 | 2117473 |
20 | -4875913 |
21 | 11228332 |
22 | -25856071 |
23 | 59541067 |
24 | -137109280 |
25 | 315732481 |
26 | -727060321 |
27 | 1674257764 |
28 | -3855438727 |
29 | 8878212019 |
30 | -20444528200 |
31 | 47079164257 |
32 | -108412748857 |
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