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A012074 as a simple table

n a(n)
0 1
1 -1
2 -3
3 -69
4 -3335
5 -289801
6 -39612939
7 -7845054541
8 -2125704833551
9 -755532171928081
10 -341044077485199379
11 -190581499954444336725
12 -129146418452087275163415
13 -104328785204254369631603225

[1,-1,-3,-69,-3335,-289801,-39612939,-7845054541,
 -2125704833551,-755532171928081,
 -341044077485199379,-190581499954444336725,
 -129146418452087275163415,
 -104328785204254369631603225]

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Last modified May 26 13:59 EDT 2022. Contains 354092 sequences. (Running on oeis4.)