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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.

A240563 Primes formed from concatenation of higher primes onto the previous entry until prime, starting from 2.

Table of values

n a(n)
1 2
2 23
3 2311
4 231131
5 23113147
6 23113147229
7 23113147229251
8 23113147229251577
9 23113147229251577857
10 23113147229251577857859
11 23113147229251577857859911
12 231131472292515778578599111123
13 2311314722925157785785991111231223

List of values

[2, 23, 2311, 231131, 23113147, 23113147229, 23113147229251, 23113147229251577, 23113147229251577857, 23113147229251577857859, 23113147229251577857859911, 231131472292515778578599111123, 2311314722925157785785991111231223]

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

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