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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.

A256889 Numbers k such that the decimal expansions of both k and k^2 have 1 as smallest digit and 5 as largest digit.

Table of values

n a(n)
1 115
2 1115
3 1235
4 3515
5 11115
6 12335
7 12415
8 33515
9 35415
10 123335
11 123512
12 124235
13 145415
14 152132
15 231115
16 235211
17 333515
18 1114115
19 1155211
20 1233335
21 1531115
22 1534312
23 2311115
24 3333515
25 11114115
26 11141115
27 11145511
28 12333335
29 12342335
30 15334312
31 15531115

List of values

[115, 1115, 1235, 3515, 11115, 12335, 12415, 33515, 35415, 123335, 123512, 124235, 145415, 152132, 231115, 235211, 333515, 1114115, 1155211, 1233335, 1531115, 1534312, 2311115, 3333515, 11114115, 11141115, 11145511, 12333335, 12342335, 15334312, 15531115]

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

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