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A053885 formatted as a simple table:

n a(n)
1 1
2 121
3 2217121
4 21127711127121
5 17177711172112177722222121
6 17117772217211221211117217772227121

[1,121,2217121,21127711127121,
 17177711172112177722222121,
 17117772217211221211117217772227121]

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


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