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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.

A053006 Numbers m for which there exist d(1),...,d(m), each in {0,1}, such that Sum_{i=1..m-k} d(i)*d(i+k) is odd for all k=0,...,m-1.

Table of values

n a(n)
1 1
2 4
3 12
4 16
5 24
6 25
7 36
8 37
9 40
10 45
11 52
12 64
13 76
14 81
15 84
16 96
17 100
18 109
19 112
20 117
21 120
22 132
23 136
24 156
25 165
26 169
27 172
28 180
29 184
30 192
31 216
32 220
33 232
34 240
35 244
36 249
37 252
38 256
39 265
40 277
41 300
42 301
43 304
44 312
45 316
46 324
47 357
48 360
49 361
50 364
51 372
52 376
53 412
54 420
55 432

List of values

[1, 4, 12, 16, 24, 25, 36, 37, 40, 45, 52, 64, 76, 81, 84, 96, 100, 109, 112, 117, 120, 132, 136, 156, 165, 169, 172, 180, 184, 192, 216, 220, 232, 240, 244, 249, 252, 256, 265, 277, 300, 301, 304, 312, 316, 324, 357, 360, 361, 364, 372, 376, 412, 420, 432]

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

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