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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.

A137254 Numbers n for which r(n) = 3 * S(n)/2, where r(n) = number of digits of n and S(n) = sum of digits of n; n in binary notation.

Table of values

n a(n)
1 5
2 6
3 39
4 43
5 45
6 46
7 51
8 53
9 54
10 57
11 58
12 60
13 287
14 303
15 311
16 315
17 317
18 318
19 335
20 343
21 347
22 349
23 350
24 359
25 363
26 365
27 366
28 371
29 373
30 374
31 377
32 378
33 380
34 399
35 407
36 411
37 413
38 414
39 423
40 427
41 429
42 430
43 435
44 437
45 438
46 441
47 442
48 444
49 455
50 459
51 461
52 462
53 467
54 469
55 470

List of values

[5, 6, 39, 43, 45, 46, 51, 53, 54, 57, 58, 60, 287, 303, 311, 315, 317, 318, 335, 343, 347, 349, 350, 359, 363, 365, 366, 371, 373, 374, 377, 378, 380, 399, 407, 411, 413, 414, 423, 427, 429, 430, 435, 437, 438, 441, 442, 444, 455, 459, 461, 462, 467, 469, 470]

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

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