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A233458 as a simple table

n a(n)
-1 1
0 -4
1 12
2 -32
3 66
4 -128
5 232
6 -384
7 639
8 -1024
9 1596
10 -2496
11 3774
12 -5632
13 8328
14 -12032
15 17283
16 -24576
17 34520
18 -48288
19 66882
20 -91904
21 125568
22 -170112
23 229244
24 -307200
25 409236
26 -542912
27 716412
28 -941056
29 1231048
30 -1602816
31 2079237
32 -2686976
33 3459264
34 -4439616

[1,-4,12,-32,66,-128,232,-384,639,-1024,1596,
 -2496,3774,-5632,8328,-12032,17283,-24576,34520,
 -48288,66882,-91904,125568,-170112,229244,-307200,
 409236,-542912,716412,-941056,1231048,-1602816,
 2079237,-2686976,3459264,-4439616]

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Last modified April 24 22:26 EDT 2019. Contains 322446 sequences. (Running on oeis4.)