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A111785 as a simple table

n a(n)
0 1
1 -1
2 -1
3 2
4 -1
5 5
6 -5
7 -1
8 6
9 3
10 -21
11 14
12 -1
13 7
14 7
15 -28
16 -28
17 84
18 -42
19 -1
20 8
21 8
22 4
23 -36
24 -72
25 -12
26 120
27 180
28 -330
29 132
30 -1
31 9
32 9
33 9
34 -45
35 -90
36 -45
37 -45
38 165
39 495
40 165
41 -495
42 -990
43 1287
44 -429
45 -1
46 10
47 10
48 10
49 5
50 -55
51 -110
52 -110
53 -55
54 -55
55 220
56 660
57 330
58 660
59 55
60 -715
61 -2860
62 -1430
63 2002
64 5005
65 -5005
66 1430
67 -1
68 11
69 11

[1,-1,-1,2,-1,5,-5,-1,6,3,-21,14,-1,7,7,-28,-28,
 84,-42,-1,8,8,4,-36,-72,-12,120,180,-330,132,-1,9,
 9,9,-45,-90,-45,-45,165,495,165,-495,-990,1287,
 -429,-1,10,10,10,5,-55,-110,-110,-55,-55,220,660,
 330,660,55,-715,-2860,-1430,2002,5005,-5005,1430,
 -1,11,11]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)