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A156720 as a simple table

n a(n)
0 1
1 -5
2 -84
3 2645
4 37380
5 -990125
6 -41075244
7 6100987285
8 84147366660
9 -4018059515075
10 -277011341395404
11 32334176427828815
12 1337456651437946340
13 -92249828940696374225
14 -8903456587278888387564
15 5668687258864979375891525
16 78158704678426515547572420

[1,-5,-84,2645,37380,-990125,-41075244,6100987285,
 84147366660,-4018059515075,-277011341395404,
 32334176427828815,1337456651437946340,
 -92249828940696374225,-8903456587278888387564,
 5668687258864979375891525,
 78158704678426515547572420]

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Last modified September 22 22:13 EDT 2021. Contains 347608 sequences. (Running on oeis4.)