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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.

A115530 Numbers k such that k^2 is the concatenation of two numbers 2*m and m.

Table of values

n a(n)
1 5714285714285714286
2 8571428571428571429
3 11428571428571428572
4 465116279069767441860465116279070
5 511627906976744186046511627906977
6 558139534883720930232558139534884
7 604651162790697674418604651162791

List of values

[5714285714285714286, 8571428571428571429, 11428571428571428572, 465116279069767441860465116279070, 511627906976744186046511627906977, 558139534883720930232558139534884, 604651162790697674418604651162791]

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

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