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A102073 as a simple table

n a(n)
1 1
2 -1
3 220
4 -830
5 51280
6 -24271600
7 2978372800
8 -72656038000
9 6574942704928000
10 -369025338813664000
11 439973927875730560000
12 -16173932272478277440000
13 8586787143256164544000000

[1,-1,220,-830,51280,-24271600,2978372800,
 -72656038000,6574942704928000,-369025338813664000,
 439973927875730560000,-16173932272478277440000,
 8586787143256164544000000]

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Last modified January 22 23:50 EST 2022. Contains 350504 sequences. (Running on oeis4.)