cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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

Original entry on oeis.org

4, 484, 784, 7744, 7478444484, 8878844747774884, 84788447488748874848488744487874447844, 484844884744844787448744774844887478884, 48784888484784787487448774777744787448847474447478448784
Offset: 1

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Author

Patrick De Geest, Mar 15 2000

Keywords

Crossrefs

Cf. A053962.

Formula

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

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