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A077486 as a simple table

n a(n)
1 9
2 81
3 841
4 8649
5 64009
6 0
7 4004001
8 0
9 900000000
10 0
11 40000400001
12 0
13 9000000000000
14 0
15 400000040000001
16 0
17 90000000000000000
18 0
19 4000000004000000001
20 0
21 900000000000000000000
22 0
23 40000000000400000000001

[9,81,841,8649,64009,0,4004001,0,900000000,0,
 40000400001,0,9000000000000,0,400000040000001,0,
 90000000000000000,0,4000000004000000001,0,
 900000000000000000000,0,40000000000400000000001]

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)