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A152620 as a simple table

n a(n)
0 1
1 -2
2 10
3 -68
4 484
5 -3464
6 24808
7 -177680
8 1272592
9 -9114656
10 65281696
11 -467565632
12 3348834880
13 -23985285248
14 171789272704
15 -1230402470144
16 8812484124928
17 -63117458178560
18 452064760678912
19 -3237813336359936

[1,-2,10,-68,484,-3464,24808,-177680,1272592,
 -9114656,65281696,-467565632,3348834880,
 -23985285248,171789272704,-1230402470144,
 8812484124928,-63117458178560,452064760678912,
 -3237813336359936]

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Last modified March 28 13:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)