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.

A115539 Numbers k such that the concatenation of k with 5*k gives a square.

Table of values

n a(n)
1 2040816326530612245
2 8163265306122448980
3 18367346938775510205
4 265008112493239588967009194159005
5 346133044889129259058950784207680
6 438074634937804218496484586262845
7 540832882639264467279610600324500

List of values

[2040816326530612245, 8163265306122448980, 18367346938775510205, 265008112493239588967009194159005, 346133044889129259058950784207680, 438074634937804218496484586262845, 540832882639264467279610600324500]

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

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