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.

A115553 Numbers k such that the concatenation of k with 9*k gives a square.

Table of values

n a(n)
1 2041
2 8164
3 2366863905325444
4 5325443786982249
5 9467455621301776
6 2040816326530612244897959183673469387755102041
7 8163265306122448979591836734693877551020408164

List of values

[2041, 8164, 2366863905325444, 5325443786982249, 9467455621301776, 2040816326530612244897959183673469387755102041, 8163265306122448979591836734693877551020408164]

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

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