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A077971 as a simple table

n a(n)
0 1
1 -1
2 2
3 -1
4 1
5 2
6 -3
7 7
8 -6
9 7
10 1
11 -6
12 21
13 -25
14 34
15 -17
16 1
17 50
18 -83
19 135
20 -118
21 87
22 65
23 -214
24 453
25 -537
26 562
27 -193
28 -319
29 1250
30 -1955
31 2567
32 -2022
33 679
34 2433
35 -5798
36 9589
37 -10521
38 8514
39 143
40 -12671
41 29842
42 -42227
43 46727
44 -29270
45 -8457
46 72641
47 -139638
48 195365
49 -189721
50 105810
51 95199
52 -368831

[1,-1,2,-1,1,2,-3,7,-6,7,1,-6,21,-25,34,-17,1,50,
 -83,135,-118,87,65,-214,453,-537,562,-193,-319,
 1250,-1955,2567,-2022,679,2433,-5798,9589,-10521,
 8514,143,-12671,29842,-42227,46727,-29270,-8457,
 72641,-139638,195365,-189721,105810,95199,-368831]

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Last modified July 30 10:03 EDT 2014. Contains 245063 sequences.