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.

A023689 Numbers with exactly 7 ones in binary expansion.

Table of values

n a(n)
1 127
2 191
3 223
4 239
5 247
6 251
7 253
8 254
9 319
10 351
11 367
12 375
13 379
14 381
15 382
16 415
17 431
18 439
19 443
20 445
21 446
22 463
23 471
24 475
25 477
26 478
27 487
28 491
29 493
30 494
31 499
32 501
33 502
34 505
35 506
36 508
37 575
38 607
39 623
40 631
41 635
42 637
43 638
44 671
45 687

List of values

[127, 191, 223, 239, 247, 251, 253, 254, 319, 351, 367, 375, 379, 381, 382, 415, 431, 439, 443, 445, 446, 463, 471, 475, 477, 478, 487, 491, 493, 494, 499, 501, 502, 505, 506, 508, 575, 607, 623, 631, 635, 637, 638, 671, 687]