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.

A029538 Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 21 (most significant digit on right and removing all least significant zeros before concatenation).

Table of values

n a(n)
1 1
2 5
3 40
4 65
5 80
6 928
7 1504
8 4568
9 4640
10 4880
11 5065
12 11201
13 31145
14 40555
15 89480
16 812645
17 1281320

List of values

[1, 5, 40, 65, 80, 928, 1504, 4568, 4640, 4880, 5065, 11201, 31145, 40555, 89480, 812645, 1281320]

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

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