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A053955 formatted as a simple table:

n a(n)
1 4
2 9
3 49
4 44944
5 5555449
6 545549449
7 59554545444
8 459949959549955449
9 555444595959444995959495549444
10 495555459949459999994555545994544549499995545449 

[4,9,49,44944,5555449,545549449,59554545444,
 459949959549955449,555444595959444995959495549444,
 495555459949459999994555545994544549499995545449]

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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