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A260447 as a simple table

n a(n)
0 1
1 -1
2 -1
3 157
4 65911
5 -918227
6 -234932171
7 592642957
8 149463069056137
9 -16648792617135289
10 -286497627060094895989
11 3538603031642540133299
12 57674522110226646157873673
13 -713986824035720029666660757
14 -6478234620955890989297122598683

[1,-1,-1,157,65911,-918227,-234932171,592642957,
 149463069056137,-16648792617135289,
 -286497627060094895989,3538603031642540133299,
 57674522110226646157873673,
 -713986824035720029666660757,
 -6478234620955890989297122598683]

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Last modified May 24 20:53 EDT 2019. Contains 323534 sequences. (Running on oeis4.)