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.

A036307 Composite numbers whose prime factors contain no digits other than 1 and 7.

Table of values

n a(n)
1 49
2 77
3 119
4 121
5 187
6 289
7 343
8 497
9 539
10 781
11 833
12 847
13 1207
14 1309
15 1331
16 2023
17 2057
18 2401
19 3179
20 3479
21 3773
22 4913
23 5041
24 5467
25 5831
26 5929
27 7819
28 8197
29 8449
30 8591
31 9163
32 9317
33 12287
34 12439
35 12881
36 13277
37 14161
38 14399
39 14641
40 16807
41 18989
42 19547

List of values

[49, 77, 119, 121, 187, 289, 343, 497, 539, 781, 833, 847, 1207, 1309, 1331, 2023, 2057, 2401, 3179, 3479, 3773, 4913, 5041, 5467, 5831, 5929, 7819, 8197, 8449, 8591, 9163, 9317, 12287, 12439, 12881, 13277, 14161, 14399, 14641, 16807, 18989, 19547]