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A058756 as a simple table

n a(n)
0 1
1 -2
2 -2
3 -2
4 -6
5 -10
6 -34
7 -82
8 -254
9 -730
10 -2238
11 -6826
12 -21370
13 -67122
14 -213654
15 -684258
16 -2208694
17 -7169298
18 -23402738
19 -76748130
20 -252790518
21 -835816658
22 -2773236614
23 -9230776706
24 -30814377058
25 -103139338858
26 -346067984622
27 -1163810570178

[1,-2,-2,-2,-6,-10,-34,-82,-254,-730,-2238,-6826,
 -21370,-67122,-213654,-684258,-2208694,-7169298,
 -23402738,-76748130,-252790518,-835816658,
 -2773236614,-9230776706,-30814377058,
 -103139338858,-346067984622,-1163810570178]

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Last modified May 20 15:50 EDT 2013. Contains 225463 sequences.