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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.

A262555 Numbers n such that the concatenation of the decimal numbers 1 through n, but omitting 2, is a prime.

Table of values

n	a(n)
1	3
2	41
3	103
4	1713
5	2769

List of values

[3, 41, 103, 1713, 2769]

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

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