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.

A115540 Numbers k such that k^2 is the concatenation of two numbers m and 5*m.

Original entry on oeis.org

14285714285714285715, 28571428571428571430, 42857142857142857145, 1627906976744186046511627906976745, 1860465116279069767441860465116280
Offset: 1

Views

Author

Giovanni Resta, Jan 25 2006

Keywords

Examples

			14285714285714285715^2 = 2040816326530612245_10204081632653061225.

Crossrefs

Cf. A102567, A106497, A115527 - A115556.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.