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.

A053950 Numbers k such that k^2 contains only digits {4,5,7}.

Original entry on oeis.org

2, 88, 6888, 6912, 7588, 68962, 6674412, 2749137588, 7466242412, 8629863583949388, 27341447393189418631675507588
Offset: 1

Views

Author

Patrick De Geest, Mar 15 2000

Keywords

Crossrefs

Cf. A053951.

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 09 2024