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.

A276200 Largest prime < the concatenation of the numbers from 1 to n (A007908).

Table of values

n a(n)
2 11
3 113
4 1231
5 12343
6 123449
7 1234547
8 12345653
9 123456761
10 12345678899
11 1234567891003
12 123456789101099
13 12345678910111207
14 1234567891011121309
15 123456789101112131383
16 12345678910111213141337
17 1234567891011121314151561
18 123456789101112131415161717
19 12345678910111213141516171723

List of values

[11, 113, 1231, 12343, 123449, 1234547, 12345653, 123456761, 12345678899, 1234567891003, 123456789101099, 12345678910111207, 1234567891011121309, 123456789101112131383, 12345678910111213141337, 1234567891011121314151561, 123456789101112131415161717, 12345678910111213141516171723]

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

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