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.

A243162 Numbers n such that n^2 divides n.n.n where dot "." means concatenation.

Table of values

n a(n)
1 1
2 3
3 13
4 21
5 37
6 39
7 91
8 1443
9 3367
10 9901
11 157737
12 333667
13 999001
14 3075403
15 9226209
16 14287143
17 33336667
18 99990001
19 1171182883
20 1224848037
21 1286294191
22 1397863441
23 1428557143
24 1469179621
25 1535254357
26 1568996211
27 1753536967
28 1792076241
29 1839599913
30 1891910811

List of values

[1, 3, 13, 21, 37, 39, 91, 1443, 3367, 9901, 157737, 333667, 999001, 3075403, 9226209, 14287143, 33336667, 99990001, 1171182883, 1224848037, 1286294191, 1397863441, 1428557143, 1469179621, 1535254357, 1568996211, 1753536967, 1792076241, 1839599913, 1891910811]

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

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