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A013217 as a simple table

n a(n)
0 0
1 0
2 -1
3 3
4 -6
5 23
6 -90
7 91
8 2520
9 -37549
10 461160
11 -5366339
12 58528008
13 -607263295
14 5930324400
15 -49004509553
16 192095423520
17 4873161825335
18 -189700932165696
19 4680846631063441
20 -99367558621150840
21 1935131558912511581

[0,0,-1,3,-6,23,-90,91,2520,-37549,461160,
 -5366339,58528008,-607263295,5930324400,
 -49004509553,192095423520,4873161825335,
 -189700932165696,4680846631063441,
 -99367558621150840,1935131558912511581]

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