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A135816 as a simple table

n a(n)
0 1
1 -1
2 1
3 -2
4 2
5 9
6 231
7 -208
8 -903776
9 -143213213
10 118835487821
11 388585756132242
12 -521157743571990450
13 -72978076847525420725075
14 -1904341683955074815027626877
15 1483881447421749524769255709488292
16 1360468742213189927760243663613128043340

[1,-1,1,-2,2,9,231,-208,-903776,-143213213,
 118835487821,388585756132242,-521157743571990450,
 -72978076847525420725075,
 -1904341683955074815027626877,
 1483881447421749524769255709488292,
 1360468742213189927760243663613128043340]

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Last modified March 26 20:37 EDT 2019. Contains 321534 sequences. (Running on oeis4.)