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A138106 formatted as a simple table:

n a(n)
1 -1
2 0
3 -1
4 2
5 0
6 -1
7 -6
8 6
9 0
10 -1
11 14
12 -24
13 12
14 0
15 -1
16 -30
17 70
18 -60
19 20
20 0
21 -1
22 62
23 -180
24 210
25 -120
26 30
27 0
28 -1
29 -126
30 434
31 -630
32 490
33 -210
34 42
35 0
36 -1
37 254
38 -1008
39 1736
40 -1680
41 980
42 -336
43 56
44 0
45 -1
46 -510
47 2286
48 -4536
49 5208
50 -3780
51 1764
52 -504
53 72
54 0
55 -1
56 1022
57 -5100
58 11430
59 -15120
60 13020
61 -7560
62 2940
63 -720
64 90
65 0
66 -1

[-1,0,-1,2,0,-1,-6,6,0,-1,14,-24,12,0,-1,-30,70,
 -60,20,0,-1,62,-180,210,-120,30,0,-1,-126,434,
 -630,490,-210,42,0,-1,254,-1008,1736,-1680,980,
 -336,56,0,-1,-510,2286,-4536,5208,-3780,1764,-504,
 72,0,-1,1022,-5100,11430,-15120,13020,-7560,2940,
 -720,90,0,-1]

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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