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A009547 as a simple table

n a(n)
0 0
1 2
2 -4
3 -42
4 -8
5 5354
6 99956
7 22974
8 -72550928
9 -3076799278
10 -44239291156
11 4012843624614
12 426360266016232
13 20979538126746554
14 -55444364705437852
15 -137742540801276301170
16 -16928772211833384004640

[0,2,-4,-42,-8,5354,99956,22974,-72550928,
 -3076799278,-44239291156,4012843624614,
 426360266016232,20979538126746554,
 -55444364705437852,-137742540801276301170,
 -16928772211833384004640]

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Last modified November 26 09:38 EST 2020. Contains 338639 sequences. (Running on oeis4.)