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A034861 as a simple table

n a(n)
4 -8
5 200
6 3360
7 43680
8 551040
9 7136640
10 96768000
11 1383782400
12 20916403200
13 334183449600
14 5637529497600
15 100255034880000
16 1876076826624000
17 36872930045952000
18 759748346413056000
19 16381540188389376000
20 368990137906790400000
21 8668429855133368320000

[-8,200,3360,43680,551040,7136640,96768000,
 1383782400,20916403200,334183449600,5637529497600,
 100255034880000,1876076826624000,
 36872930045952000,759748346413056000,
 16381540188389376000,368990137906790400000,
 8668429855133368320000]

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Last modified December 2 10:47 EST 2021. Contains 349440 sequences. (Running on oeis4.)