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A248656 as a simple table

n a(n)
0 1
1 -4
2 1172
3 -2394604
4 17925470132
5 -356711164156204
6 15557257046545589492
7 -1306859934761006954164204
8 192757826813283097789632563252
9 -46564510721452609888686654192978604
10 17449940281041871638688960825766828695412
11 -9712709908164237387647891995373875626734039404

[1,-4,1172,-2394604,17925470132,-356711164156204,
 15557257046545589492,-1306859934761006954164204,
 192757826813283097789632563252,
 -46564510721452609888686654192978604,
 17449940281041871638688960825766828695412,
 -9712709908164237387647891995373875626734039404]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)