n | a(n) |
---|---|
0 | -1 |
1 | -1 |
2 | 4 |
3 | -11 |
4 | 29 |
5 | -76 |
6 | 199 |
7 | -521 |
8 | 1364 |
9 | -3571 |
10 | 9349 |
11 | -24476 |
12 | 64079 |
13 | -167761 |
14 | 439204 |
15 | -1149851 |
16 | 3010349 |
17 | -7881196 |
18 | 20633239 |
19 | -54018521 |
20 | 141422324 |
21 | -370248451 |
22 | 969323029 |
23 | -2537720636 |
24 | 6643838879 |
25 | -17393796001 |
26 | 45537549124 |
27 | -119218851371 |
[-1,-1,4,-11,29,-76,199,-521,1364,-3571,9349, -24476,64079,-167761,439204,-1149851,3010349, -7881196,20633239,-54018521,141422324,-370248451, 969323029,-2537720636,6643838879,-17393796001, 45537549124,-119218851371] |