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A012220 as a simple table

n a(n)
0 1
1 1
2 -11
3 349
4 -22007
5 2312601
6 -365164227
7 80916522933
8 -23968582079343
9 9151870592718513
10 -4378918837383018747
11 2566828786036427906445
12 -1809533477302236292739175
13 1510703360292377534570508105

[1,1,-11,349,-22007,2312601,-365164227,
 80916522933,-23968582079343,9151870592718513,
 -4378918837383018747,2566828786036427906445,
 -1809533477302236292739175,
 1510703360292377534570508105]

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Last modified October 25 23:10 EDT 2020. Contains 338026 sequences. (Running on oeis4.)