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A069240 as a simple table

n a(n)
1 0
2 -1
3 -2
4 -2
5 10
6 212
7 3224
8 62366
9 1497338
10 44975716
11 1634965984
12 71171583968

[0,-1,-2,-2,10,212,3224,62366,1497338,44975716,
 1634965984,71171583968]

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Last modified October 22 22:22 EDT 2020. Contains 337962 sequences. (Running on oeis4.)