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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.

A019518 Smarandache-Wellin numbers: a(n) is the concatenation of first n primes (written in base 10).

Table of values

n a(n)
1 2
2 23
3 235
4 2357
5 235711
6 23571113
7 2357111317
8 235711131719
9 23571113171923
10 2357111317192329
11 235711131719232931
12 23571113171923293137
13 2357111317192329313741
14 235711131719232931374143
15 23571113171923293137414347

List of values

[2, 23, 235, 2357, 235711, 23571113, 2357111317, 235711131719, 23571113171923, 2357111317192329, 235711131719232931, 23571113171923293137, 2357111317192329313741, 235711131719232931374143, 23571113171923293137414347]

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

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