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A259632 as a simple table

n a(n)
1 -2
2 -2
3 -3
4 -2
5 0
6 28
7 199
8 483
9 9040
10 143814
11 306295
12 963844
13 5155067
14 81053615
15 1334916470
16 29106956400
17 58655156000
18 1817551640000
19 56466287000000
20 376943530000000
21 1144451930000000
22 41803527000000000

[-2,-2,-3,-2,0,28,199,483,9040,143814,306295,
 963844,5155067,81053615,1334916470,29106956400,
 58655156000,1817551640000,56466287000000,
 376943530000000,1144451930000000,
 41803527000000000]

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Last modified May 6 14:25 EDT 2024. Contains 372293 sequences. (Running on oeis4.)