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A013122 as a simple table

n a(n)
0 1
1 0
2 -4
3 6
4 13
5 -20
6 -454
7 1302
8 13213
9 -57528
10 -566304
11 1146750
12 83953137
13 -715819260
14 590760166
15 -61357519650
16 2337988853657
17 -32573393982320
18 362267655859524
19 -8238027536343882
20 209882071249912757

[1,0,-4,6,13,-20,-454,1302,13213,-57528,-566304,
 1146750,83953137,-715819260,590760166,
 -61357519650,2337988853657,-32573393982320,
 362267655859524,-8238027536343882,
 209882071249912757]

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Last modified September 25 12:12 EDT 2022. Contains 356984 sequences. (Running on oeis4.)