n | a(n) |
---|---|
3 | 0 |
4 | -1 |
5 | 33066 |
6 | 146858 |
7 | 273118 |
8 | -1 |
9 | 1274522 |
10 | 2117145 |
11 | 3613278 |
12 | -1 |
13 | 7250758 |
14 | -1 |
15 | 12911636 |
16 | -1 |
17 | 22655394 |
18 | 26801303 |
19 | 25049533 |
20 | -1 |
21 | 56922533 |
22 | 115715602 |
23 | 81539010 |
24 | -1 |
25 | 85105105 |
26 | -1 |
27 | 106555658 |
28 | -1 |
29 | 233296317 |
30 | 267370631 |
31 | 286763923 |
32 | -1 |
33 | 358322750 |
[0,-1,33066,146858,273118,-1,1274522,2117145, 3613278,-1,7250758,-1,12911636,-1,22655394, 26801303,25049533,-1,56922533,115715602,81539010, -1,85105105,-1,106555658,-1,233296317,267370631, 286763923,-1,358322750] |