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A122593 as a simple table

n a(n)
1 1
2 1
3 1
4 0
5 0
6 2
7 -6
8 -54
9 -2184
10 -4532418
11 -20523011025492
12 -421193795514716517978851412
13 -177404213380075544048510970681865493733941889439557930
14 -31472254925003374689403264185693337773848906235022202710045975235073779744728

[1,1,1,0,0,2,-6,-54,-2184,-4532418,
 -20523011025492,-421193795514716517978851412,
 -1774042133800755440485109706818654937339418894395\
 57930,
 -3147225492500337468940326418569333777384890623502\
 2202710045975235073779744728]

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Last modified May 14 03:00 EDT 2021. Contains 343872 sequences. (Running on oeis4.)