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A128056 as a simple table

n a(n)
0 1
1 -3
2 -6
3 28
4 56
5 -288
6 -576
7 3008
8 6016
9 -31488
10 -62976
11 329728
12 659456
13 -3452928
14 -6905856
15 36159488
16 72318976
17 -378667008
18 -757334016
19 3965452288
20 7930904576
21 -41526755328
22 -83053510656
23 434873827328

[1,-3,-6,28,56,-288,-576,3008,6016,-31488,-62976,
 329728,659456,-3452928,-6905856,36159488,72318976,
 -378667008,-757334016,3965452288,7930904576,
 -41526755328,-83053510656,434873827328]

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Last modified April 24 19:06 EDT 2024. Contains 371962 sequences. (Running on oeis4.)