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A087636
as a simple table
n
a(n)
1
0
2
18
3
81
4
1539
5
20457
6
242217
7
2894799
8
33535839
9
381591711
[0,18,81,1539,20457,242217,2894799,33535839, 381591711]
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Last modified April 19 16:08 EDT 2024. Contains 371794 sequences. (Running on oeis4.)
