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A089907 as a simple table

n a(n)
0 0
1 21
2 483
3 7785
4 107787
5 1377789
6 16777791
7 197777793
8 2277777795
9 25777777797
10 287777777799
11 3177777777801
12 34777777777803
13 377777777777805
14 4077777777777807
15 43777777777777809
16 467777777777777811

[0,21,483,7785,107787,1377789,16777791,197777793,
 2277777795,25777777797,287777777799,3177777777801,
 34777777777803,377777777777805,4077777777777807,
 43777777777777809,467777777777777811]

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Last modified April 26 12:36 EDT 2024. Contains 371997 sequences. (Running on oeis4.)