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.

A328864 For any three-digit number k = hdu, f(k) = (h+d+u) + (h*d+d*u+u*h) + (h*d*u). This sequence consists of the numbers k for which the ratio k/f(k) is an integer.

Table of values

n a(n)
1 100
2 114
3 115
4 120
5 121
6 190
7 199
8 200
9 207
10 208
11 210
12 221
13 260
14 290
15 299
16 300
17 301
18 304
19 330
20 390
21 399
22 400
23 420
24 441
25 448
26 490
27 499
28 500
29 572
30 573
31 590
32 599
33 600
34 620
35 624
36 625
37 690
38 699
39 700
40 705
41 790
42 799
43 800
44 806
45 880
46 890
47 899
48 900
49 990
50 999

List of values

[100, 114, 115, 120, 121, 190, 199, 200, 207, 208, 210, 221, 260, 290, 299, 300, 301, 304, 330, 390, 399, 400, 420, 441, 448, 490, 499, 500, 572, 573, 590, 599, 600, 620, 624, 625, 690, 699, 700, 705, 790, 799, 800, 806, 880, 890, 899, 900, 990, 999]

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

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