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A154962 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 -2
5 -5
6 -6
7 3
8 10
9 90
10 -5
11 -13
12 -14
13 5
14 30
15 510
16 -10
17 -21
18 -22
19 7
20 60
21 2100
22 -14
23 -29
24 -30

[1,1,1,1,-2,-5,-6,3,10,90,-5,-13,-14,5,30,510,-10,
 -21,-22,7,60,2100,-14,-29,-30]

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Last modified August 3 08:21 EDT 2021. Contains 346435 sequences. (Running on oeis4.)