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A049392 as a simple table

n a(n)
0 1
1 -10
2 -75
3 -1000
4 -16250
5 -292500
6 -5606250
7 -112125000
8 -2312578125
9 -48821093750
10 -1049653515625
11 -22901531250000
12 -505742148437500
13 -11281940234375000
14 -253843655273437500
15 -5753789519531250000

[1,-10,-75,-1000,-16250,-292500,-5606250,
 -112125000,-2312578125,-48821093750,
 -1049653515625,-22901531250000,-505742148437500,
 -11281940234375000,-253843655273437500,
 -5753789519531250000]

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Last modified November 27 09:19 EST 2021. Contains 349365 sequences. (Running on oeis4.)