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.

A258060 Squares, without multiplicity, that are the concatenation of two integers (without leading zeros) the product of which is also a square.

Table of values

n a(n)
1 49
2 169
3 361
4 1225
5 1444
6 1681
7 3249
8 4225
9 4900
10 15625
11 16900
12 36100
13 42025
14 49729
15 64009
16 81225
17 93025
18 122500
19 142129
20 144400
21 168100
22 225625
23 237169
24 324900
25 414736
26 422500
27 490000
28 519841
29 819025
30 950625
31 970225
32 1024144
33 1442401
34 1562500
35 1600225
36 1690000
37 1692601
38 2079364
39 2304324

List of values

[49, 169, 361, 1225, 1444, 1681, 3249, 4225, 4900, 15625, 16900, 36100, 42025, 49729, 64009, 81225, 93025, 122500, 142129, 144400, 168100, 225625, 237169, 324900, 414736, 422500, 490000, 519841, 819025, 950625, 970225, 1024144, 1442401, 1562500, 1600225, 1690000, 1692601, 2079364, 2304324]

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

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