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A307355 as a simple table

n a(n)
1 1
2 1
3 -1
4 -1
5 23
6 -197
7 1093
8 5377
9 -374863
10 9934889
11 -195976201
12 2134159519
13 67270069831
14 -6730482201869
15 365726633654957
16 -15494292929032063
17 458469986808144737
18 2828723973314497873
19 -2067360599320208561297
20 238687490584532161293631
21 -20425982116564721266720009

[1,1,-1,-1,23,-197,1093,5377,-374863,9934889,
 -195976201,2134159519,67270069831,-6730482201869,
 365726633654957,-15494292929032063,
 458469986808144737,2828723973314497873,
 -2067360599320208561297,238687490584532161293631,
 -20425982116564721266720009]

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)