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A290879 as a simple table

n a(n)
1 1
2 -2
3 44
4 -2840
5 367760
6 -79719200
7 26016555200
8 -11921650083200
9 7300922254496000
10 -5759532173685056000
11 5688335131502291840000
12 -6875441991877610827520000
13 9983390897443366347676160000
14 -17148197258942716354314368000000
15 34392433372153876998446324480000000
16 -79646680171456811546338888517120000000
17 210930739548407111241584046599398400000000 

[1,-2,44,-2840,367760,-79719200,26016555200,
 -11921650083200,7300922254496000,
 -5759532173685056000,5688335131502291840000,
 -6875441991877610827520000,
 9983390897443366347676160000,
 -17148197258942716354314368000000,
 34392433372153876998446324480000000,
 -79646680171456811546338888517120000000,
 210930739548407111241584046599398400000000]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)