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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.

A106497 Numbers whose square is the concatenation of two identical numbers, i.e., of the form NN.

Table of values

n a(n)
1 36363636364
2 45454545455
3 54545454546
4 63636363637
5 72727272728
6 81818181819
7 90909090910
8 428571428571428571429
9 571428571428571428572
10 714285714285714285715
11 857142857142857142858

List of values

[36363636364, 45454545455, 54545454546, 63636363637, 72727272728, 81818181819, 90909090910, 428571428571428571429, 571428571428571428572, 714285714285714285715, 857142857142857142858]

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

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