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A053951
Squares composed of digits {4,5,7}.
2
4, 7744, 47444544, 47775744, 57577744, 4755757444, 44547775545744, 7557757477754457744, 55744775754747577744, 74474545477575775744575745574544, 747554745554544455555455747745774457774554454557445577744
OFFSET
1,1
FORMULA
a(n) = A053950(n)^2.
CROSSREFS
Cf. A053950.
Sequence in context: A304994 A058440 A058464 * A058460 A115050 A072724
KEYWORD
nonn,base,more
AUTHOR
Patrick De Geest, Mar 15 2000
EXTENSIONS
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005
One more term from Mishima's webpage added by Max Alekseyev, Jan 28 2012
a(11) from Zhao Hui Du, Mar 10 2024
STATUS
approved