A053965
formatted as a simple table:
n
a(n)
1
4
2
9
3
49
4
7744
5
44944
6
797449
7
4794494447474944
8
77777777797497997444
[4,9,49,7744,44944,797449,4794494447474944, 77777777797497997444]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 7 23:50 EST 2009. Contains 170430 sequences.
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