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.

A053951 Squares composed of digits {4,5,7}.

Original entry on oeis.org

4, 7744, 47444544, 47775744, 57577744, 4755757444, 44547775545744, 7557757477754457744, 55744775754747577744, 74474545477575775744575745574544, 747554745554544455555455747745774457774554454557445577744
Offset: 1

Views

Author

Patrick De Geest, Mar 15 2000

Keywords

Crossrefs

Cf. A053950.

Formula

a(n) = A053950(n)^2.

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