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A258878 as a simple table

n a(n)
1 1
2 -2
3 -20
4 -3320
5 -1598960
6 -1757280800
7 -3687555924800
8 -13169930119702400
9 -73877683147510880000
10 -613509458527719828800000
11 -7207218902820454669458560000
12 -115535941439664355284062432000000
13 -2454583328787383660694513356633600000
14 -67459240631654340522067311327301145600000

[1,-2,-20,-3320,-1598960,-1757280800,
 -3687555924800,-13169930119702400,
 -73877683147510880000,-613509458527719828800000,
 -7207218902820454669458560000,
 -115535941439664355284062432000000,
 -2454583328787383660694513356633600000,
 -67459240631654340522067311327301145600000]

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)