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.

A197817 Smallest composite m such that m and the smallest prime divisor of m begin with n.

Table of values

n a(n)
1 121
2 20
3 33
4 4141
5 55
6 6161
7 77
8 8051
9 9409
10 10201
11 1111
12 120269
13 1313
14 140209
15 150547
16 160229
17 1717
18 180457
19 1919
20 20002379
21 210367
22 220417
23 2323
24 240277
25 250247
26 260123
27 270187
28 280157
29 2929
30 301781
31 3131
32 32003357
33 330007
34 340973
35 350743
36 360761
37 3737
38 380053

List of values

[121, 20, 33, 4141, 55, 6161, 77, 8051, 9409, 10201, 1111, 120269, 1313, 140209, 150547, 160229, 1717, 180457, 1919, 20002379, 210367, 220417, 2323, 240277, 250247, 260123, 270187, 280157, 2929, 301781, 3131, 32003357, 330007, 340973, 350743, 360761, 3737, 380053]

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

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