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A207009 as a simple table

n a(n)
1 9
2 81
3 529
4 3721
5 25921
6 180625
7 1256641
8 8743849
9 60855601
10 423577561
11 2948164209
12 20519130025
13 142812189025
14 993971114361
15 6918041467089
16 48149568342121
17 335120802753025
18 2332439189580889
19 16233767034063601

[9,81,529,3721,25921,180625,1256641,8743849,
 60855601,423577561,2948164209,20519130025,
 142812189025,993971114361,6918041467089,
 48149568342121,335120802753025,2332439189580889,
 16233767034063601]

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Last modified January 30 15:26 EST 2023. Contains 359945 sequences. (Running on oeis4.)