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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.

A116501 Numbers k such that the base-10 representation of k^2 has the structure dmdmd, where d is a single digit and m is a string of digits.

Table of values

n a(n)
1 264
2 238165
3 309097
4 1052631579
5 1104579631
6 2076555028
7 2105263158
8 2209159262
9 3004048583
10 3157894737
11 30762132977
12 107438016531
13 214876033062
14 10909090909091
15 21818181818182
16 1001889106154509
17 1047612381019049
18 1109550442957111
19 1113036341252109
20 1123107893966631
21 1136632365773631
22 1168831168831171

List of values

[264, 238165, 309097, 1052631579, 1104579631, 2076555028, 2105263158, 2209159262, 3004048583, 3157894737, 30762132977, 107438016531, 214876033062, 10909090909091, 21818181818182, 1001889106154509, 1047612381019049, 1109550442957111, 1113036341252109, 1123107893966631, 1136632365773631, 1168831168831171]

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

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