Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 1 |
4 | 2 |
5 | 5 |
6 | 14 |
7 | 39 |
8 | 110 |
9 | 323 |
10 | 956 |
11 | 2835 |
12 | 8648 |
13 | 26449 |
14 | 80356 |
15 | 253709 |
16 | 789110 |
17 | 2400681 |
18 | 8095578 |
19 | 24339611 |
20 | 71349218 |
21 | 314555855 |
22 | 559848480 |
23 | 2096495479 |
24 | 23012907844 |
25 | -84278218251 |
26 | 415921423864 |
27 | 2974067144745 |
[1,0,1,2,5,14,39,110,323,956,2835,8648,26449, 80356,253709,789110,2400681,8095578,24339611, 71349218,314555855,559848480,2096495479, 23012907844,-84278218251,415921423864, 2974067144745] |