A053959 Squares composed of digits {4,6,8}.

4, 64, 484, 8464, 68644, 8868484, 66686864644, 648446888644, 84488488664644, 6688684484846884, 484468468684686864, 6486486884468464644, 8666684686666444646464, 6868846444484868668464644, 686666466846666884868486448488884846884

Offset

1,1

Links

Table of n, a(n) for n=1..15.

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

Hisanori Mishima, Sporadic tridigital solutions.

Author?, Source(txt)

Formula

a(n) = A053958(n)^2. - Elmo R. Oliveira, Jul 16 2025

Crossrefs

Cf. A053958.

Sequence in context: A087045 A169801 A103751 * A343725 A195800 A224446

Adjacent sequences: A053956 A053957 A053958 * A053960 A053961 A053962

Keyword

nonn,base,hard,more

Author

Patrick De Geest, Mar 15 2000

Extensions

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005

One more term from Jon E. Schoenfield, Sep 04 2006

a(15) from Mishima's website added by Elmo R. Oliveira, Jul 16 2025

Status

approved