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A091198 as a simple table

n a(n)
0 1
1 0
2 -4
3 -8
4 -4
5 8
6 2152
7 2512
8 13111268
9 -395176
10 -82924456
11 -13555899088
12 -2631923234888
13 37752874672
14 216345498683758064
15 99819297900260128
16 41627318132855276
17 -183304161420546414632
18 -9525824788653159417913288
19 -9237738179906235615568
20 -362496161669176865866257860344

[1,0,-4,-8,-4,8,2152,2512,13111268,-395176,
 -82924456,-13555899088,-2631923234888,37752874672,
 216345498683758064,99819297900260128,
 41627318132855276,-183304161420546414632,
 -9525824788653159417913288,
 -9237738179906235615568,
 -362496161669176865866257860344]

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Last modified April 24 15:57 EDT 2024. Contains 371961 sequences. (Running on oeis4.)