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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.

A212128 Nonprimes whose arithmetic derivative equals the sum of its proper divisors.

Table of values

n	a(n)
1	1
2	12
3	18
4	220
5	396
6	287532

List of values

[1, 12, 18, 220, 396, 287532]

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

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