A053899
formatted as a simple table:
n
a(n)
1
1
2
4
3
144
4
441
5
1444
6
7744
7
7447441
8
4147177477444
9
7174474747441
10
1447471174444717444
[1,4,144,441,1444,7744,7447441,4147177477444, 7174474747441,1447471174444717444]
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 18 21:37 EST 2009. Contains 171024 sequences.
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