A053957 Squares composed of digits {4,6,7}.

4, 64, 676, 7744, 4444667464644, 66667767777644764644, 767646664777467676766464, 6446477674444767467664676, 7446477664767776477464446664464, 64446474444746646444646744666444644, 664676644466466777446466766667744446667647467664

Offset

1,1

Links

Table of n, a(n) for n=1..11.

Patrick De Geest, Squares containing at most three distinct digits, Index entries for related sequences.

Hisanori Mishima, Squares consisted of 3 different digits.

Author?, Source(txt)

Formula

a(n) = A053956(n)^2. - Elmo R. Oliveira, Jul 17 2025

Crossrefs

Cf. A053956.

Sequence in context: A318779 A264567 A264575 * A145244 A268165 A026301

Adjacent sequences: A053954 A053955 A053956 * A053958 A053959 A053960

Keyword

nonn,base,more

Author

Patrick De Geest, Mar 15 2000

Extensions

a(6)-a(7) from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005

a(8) from Jon E. Schoenfield, Sep 04 2006

a(9)-a(10) from Mishima's website added by Max Alekseyev, May 07 2009

a(11) from Mishima's website added by Elmo R. Oliveira, Jul 17 2025

Status

approved