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.

A178928 Smallest semiprime containing leading sequence of n ascending numbers.

Table of values

n a(n)
1 10
2 121
3 123
4 1234
5 123451
6 1234561
7 1234567
8 123456782
9 12345678911
10 123456789101
11 123456789101117
12 12345678910111229
13 123456789101112133
14 123456789101112131414
15 1234567891011121314159

List of values

[10, 121, 123, 1234, 123451, 1234561, 1234567, 123456782, 12345678911, 123456789101, 123456789101117, 12345678910111229, 123456789101112133, 123456789101112131414, 1234567891011121314159]

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

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