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A108821 formatted as a simple table:

n a(n)
1 647
2 24443
3 84449
4 644447
5 24444443
6 64444444447
7 2444444444443
8 84444444444449
9 2444444444444444444444444444443
10 84444444444444444444444444444444444449 

[647,24443,84449,644447,24444443,64444444447,
 2444444444443,84444444444449,
 2444444444444444444444444444443,
 84444444444444444444444444444444444449]

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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