n | a(n) |
---|---|
1 | 1 |
2 | -1 |
3 | -1 |
4 | 2 |
5 | 49 |
6 | 629 |
7 | 6961 |
8 | 38366 |
9 | -1899687 |
10 | -133065253 |
11 | -6482111309 |
12 | -281940658286 |
13 | -10702380933551 |
14 | -247708227641863 |
15 | 14512103549430397 |
16 | 3377044611825908414 |
17 | 433180638973276282801 |
18 | 47474992085447610990231 |
[1,-1,-1,2,49,629,6961,38366,-1899687,-133065253, -6482111309,-281940658286,-10702380933551, -247708227641863,14512103549430397, 3377044611825908414,433180638973276282801, 47474992085447610990231] |