n | a(n) |
---|---|
0 | -2 |
1 | -4 |
2 | -4 |
3 | 26 |
4 | 272 |
5 | 1826 |
6 | 10736 |
7 | 59426 |
8 | 318272 |
9 | 1670786 |
10 | 8656976 |
11 | 44454626 |
12 | 226827872 |
13 | 1151991746 |
14 | 5830280816 |
15 | 29429454626 |
16 | 148249811072 |
17 | 745630312706 |
18 | 3745590106256 |
19 | 18797445635426 |
20 | 94264432179872 |
21 | 472428649241666 |
22 | 2366562219717296 |
23 | 11850466059333026 |
24 | 59322887352366272 |
[-2,-4,-4,26,272,1826,10736,59426,318272,1670786, 8656976,44454626,226827872,1151991746,5830280816, 29429454626,148249811072,745630312706, 3745590106256,18797445635426,94264432179872, 472428649241666,2366562219717296, 11850466059333026,59322887352366272] |