n | a(n) |
---|---|
0 | 1 |
1 | -3 |
2 | 3 |
3 | 1 |
4 | 3 |
5 | 3 |
6 | 7 |
7 | 9 |
8 | 99 |
9 | 143 |
10 | 429 |
11 | 663 |
12 | 4199 |
13 | 6783 |
14 | 22287 |
15 | 37145 |
16 | 1002915 |
17 | 1710855 |
18 | 5892945 |
19 | 10235115 |
20 | 71645805 |
21 | 126233085 |
22 | 447553665 |
23 | 797813055 |
24 | 11435320455 |
25 | 20583576819 |
26 | 74417546961 |
27 | 135054066707 |
[1,-3,3,1,3,3,7,9,99,143,429,663,4199,6783,22287, 37145,1002915,1710855,5892945,10235115,71645805, 126233085,447553665,797813055,11435320455, 20583576819,74417546961,135054066707] |