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A013218 as a simple table

n a(n)
0 0
1 0
2 -1
3 3
4 -6
5 23
6 -150
7 1351
8 -12600
9 118187
10 -1224720
11 14702941
12 -200731608
13 2986886693
14 -47352985680
15 800879433355
16 -14538372969120
17 282952402841303
18 -5862543549637824
19 128430397643505121
20 -2964326737589237000
21 71982961886998521617

[0,0,-1,3,-6,23,-150,1351,-12600,118187,-1224720,
 14702941,-200731608,2986886693,-47352985680,
 800879433355,-14538372969120,282952402841303,
 -5862543549637824,128430397643505121,
 -2964326737589237000,71982961886998521617]

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Last modified June 20 01:56 EDT 2024. Contains 373510 sequences. (Running on oeis4.)