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.

A202262 Composite numbers in which all substrings are composite.

Table of values

n a(n)
1 4
2 6
3 8
4 9
5 44
6 46
7 48
8 49
9 64
10 66
11 68
12 69
13 84
14 86
15 88
16 94
17 96
18 98
19 99
20 444
21 446
22 448
23 464
24 466
25 468
26 469
27 484
28 486
29 488
30 494
31 496
32 498
33 644
34 646
35 648
36 649
37 664
38 666
39 668
40 669
41 684
42 686
43 688
44 694
45 696
46 698
47 699
48 844
49 846
50 848
51 849
52 864
53 866
54 868
55 869
56 884
57 886

List of values

[4, 6, 8, 9, 44, 46, 48, 49, 64, 66, 68, 69, 84, 86, 88, 94, 96, 98, 99, 444, 446, 448, 464, 466, 468, 469, 484, 486, 488, 494, 496, 498, 644, 646, 648, 649, 664, 666, 668, 669, 684, 686, 688, 694, 696, 698, 699, 844, 846, 848, 849, 864, 866, 868, 869, 884, 886]