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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]