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.

A135441 Numbers k such that for any single digit d of k the d-th semiprime sp(k) is substring of k.

Table of values

n a(n)
1 104
2 410
3 1004
4 1014
5 1040
6 1041
7 1044
8 1104
9 1410
10 4010
11 4100
12 4101
13 4104
14 4110
15 4410
16 10004
17 10014
18 10040
19 10041
20 10044
21 10104
22 10114
23 10140
24 10141
25 10144
26 10145
27 10400
28 10401
29 10404
30 10410
31 10411
32 10414
33 10440
34 10441
35 10444
36 10514
37 11004
38 11014
39 11040

List of values

[104, 410, 1004, 1014, 1040, 1041, 1044, 1104, 1410, 4010, 4100, 4101, 4104, 4110, 4410, 10004, 10014, 10040, 10041, 10044, 10104, 10114, 10140, 10141, 10144, 10145, 10400, 10401, 10404, 10410, 10411, 10414, 10440, 10441, 10444, 10514, 11004, 11014, 11040]

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

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