A053963 Squares composed of digits {4,7,8}.

4, 484, 784, 7744, 7478444484, 8878844747774884, 84788447488748874848488744487874447844, 484844884744844787448744774844887478884, 48784888484784787487448774777744787448847474447478448784

Offset

1,1

Links

Table of n, a(n) for n=1..9.

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

Hisanori Mishima Squares consisted of 3 different digits. [From Max Alekseyev, Mar 10 2009]

Formula

a(n) = A053962(n)^2. - Elmo R. Oliveira, Jul 18 2025

Crossrefs

Cf. A053962.

Sequence in context: A035483 A145570 A053292 * A053941 A027678 A058442

Adjacent sequences: A053960 A053961 A053962 * A053964 A053965 A053966

Keyword

nonn,base,more

Author

Patrick De Geest, Mar 15 2000

Extensions

a(7)-a(8) from Mishima's page added by Max Alekseyev, Mar 10 2009

a(9) from Zhao Hui Du, Mar 10 2024

Status

approved