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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.

A115554 Numbers k such that k^2 is the concatenation of two numbers m and 9*m.

Table of values

n a(n)
1 14287
2 28574
3 15384615384615386
4 23076923076923079
5 30769230769230772
6 14285714285714285714285714285714285714285714287
7 28571428571428571428571428571428571428571428574

List of values

[14287, 28574, 15384615384615386, 23076923076923079, 30769230769230772, 14285714285714285714285714285714285714285714287, 28571428571428571428571428571428571428571428574]

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

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