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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.

A118694 Semiprimes which are divisible by the product of their digits.

Table of values

n a(n)
1 4
2 6
3 9
4 15
5 111
6 115
7 1111
8 1115
9 11111
10 1111111
11 1111117
12 111111115
13 1111113111
14 1111711111
15 11111111111
16 111111111115
17 1111111111113
18 1111117111111
19 11171111111111
20 1111111111711111
21 1111711111111111
22 11111111111111111

List of values

[4, 6, 9, 15, 111, 115, 1111, 1115, 11111, 1111111, 1111117, 111111115, 1111113111, 1111711111, 11111111111, 111111111115, 1111111111113, 1111117111111, 11171111111111, 1111111111711111, 1111711111111111, 11111111111111111]

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

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