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A191471 as a simple table

n a(n)
0 1
1 0
2 2
3 -3
4 4
5 -30
6 162
7 -252
8 400
9 -27912
10 200744
11 705672
12 -4202296
13 -223340208
14 1418238416
15 29398266888
16 -114981277184
17 -8193860510784
18 30889433635776
19 2261786651427072
20 -3830504174333824

[1,0,2,-3,4,-30,162,-252,400,-27912,200744,705672,
 -4202296,-223340208,1418238416,29398266888,
 -114981277184,-8193860510784,30889433635776,
 2261786651427072,-3830504174333824]

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Last modified January 26 18:26 EST 2022. Contains 350599 sequences. (Running on oeis4.)