n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | -3 |
3 | -7 |
4 | -17 |
5 | -45 |
6 | -129 |
7 | -393 |
8 | -1251 |
9 | -4111 |
10 | -13835 |
11 | -47427 |
12 | -164999 |
13 | -581023 |
14 | -2066823 |
15 | -7415703 |
16 | -26805393 |
17 | -97520733 |
18 | -356810313 |
19 | -1312087713 |
20 | -4846614093 |
21 | -17974854933 |
22 | -66907388973 |
23 | -249872516253 |
24 | -935991743553 |
25 | -3515800038201 |
26 | -13239692841105 |
[1,-1,-3,-7,-17,-45,-129,-393,-1251,-4111,-13835, -47427,-164999,-581023,-2066823,-7415703, -26805393,-97520733,-356810313,-1312087713, -4846614093,-17974854933,-66907388973, -249872516253,-935991743553,-3515800038201, -13239692841105] |