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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.

A153751 Numbers k such that there are 15 digits in k^2 and for each factor f of 15 (1,3,5) the sum of digit groupings of size f is a square.

Table of values

n a(n)
1 10000000
2 10000001
3 10000002
4 10000003
5 10000004
6 10000005
7 10000010
8 10000011
9 10000012
10 10000013
11 10000020
12 10000021
13 10000022
14 10000030
15 10000031
16 10000200
17 10000300
18 10011003
19 10022000
20 10035990
21 10042440

List of values

[10000000, 10000001, 10000002, 10000003, 10000004, 10000005, 10000010, 10000011, 10000012, 10000013, 10000020, 10000021, 10000022, 10000030, 10000031, 10000200, 10000300, 10011003, 10022000, 10035990, 10042440]

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

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