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A009047 as a simple table

n a(n)
0 1
1 -1
2 -7
3 23
4 1297
5 -6129
6 -894903
7 829671
8 1879275169
9 1886150559
10 -7580265762535
11 -85001467923145
12 61409100961369265
13 1056714909891968687
14 -781355567634874555799
15 -25440890573992236442361

[1,-1,-7,23,1297,-6129,-894903,829671,1879275169,
 1886150559,-7580265762535,-85001467923145,
 61409100961369265,1056714909891968687,
 -781355567634874555799,-25440890573992236442361]

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Last modified February 29 14:32 EST 2024. Contains 370425 sequences. (Running on oeis4.)