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A137349 as a simple table

n a(n)
1 1
2 -2
3 2
4 0
5 -2
6 -12
7 12
8 4
9 -4
10 0
11 4
12 -24
13 -264
14 576
15 -288
16 -8
17 8
18 0
19 -8
20 -144
21 1872
22 10368
23 -39744
24 41472
25 -13824
26 16
27 -16

[1,-2,2,0,-2,-12,12,4,-4,0,4,-24,-264,576,-288,-8,
 8,0,-8,-144,1872,10368,-39744,41472,-13824,16,-16]

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Last modified September 28 16:27 EDT 2021. Contains 347716 sequences. (Running on oeis4.)