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A058440
Squares composed of digits {0,4,7}, not ending with zero.
1
4, 7744, 407044, 4044074004774077447400004400704
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..4.
P. De Geest,
Index to related sequences
Hisanori Mishima,
Sporadic tridigital solutions
CROSSREFS
Cf.
A058439
.
Sequence in context:
A077258
A272165
A304994
*
A058464
A053951
A058460
Adjacent sequences:
A058437
A058438
A058439
*
A058441
A058442
A058443
KEYWORD
nonn
,
base
,
hard
,
more
AUTHOR
Patrick De Geest
, Nov 15 2000
STATUS
approved
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Last modified March 29 10:58 EDT 2024. Contains 371268 sequences. (Running on oeis4.)