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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.

A350802 a(n) is the sum of the numbers k < n such that a(k) AND n = a(k) (where AND denotes the bitwise AND operator).

Table of values

n a(n)
0 0
1 0
2 1
3 3
4 1
5 7
6 1
7 21
8 1
9 21
10 1
11 34
12 1
13 43
14 1
15 65
16 1
17 73
18 1
19 94
20 1
21 127
22 1
23 157
24 1
25 157
26 1
27 186
28 1
29 227
30 1
31 265
32 1
33 273
34 12
35 287
36 1
37 309
38 12
39 328
40 1
41 349
42 12
43 376
44 115
45 463
46 126
47 495
48 1
49 397
50 12
51 411
52 1
53 465
54 12
55 484
56 1
57 505
58 12
59 532
60 277
61 797
62 288
63 829
64 1

List of values

[0, 0, 1, 3, 1, 7, 1, 21, 1, 21, 1, 34, 1, 43, 1, 65, 1, 73, 1, 94, 1, 127, 1, 157, 1, 157, 1, 186, 1, 227, 1, 265, 1, 273, 12, 287, 1, 309, 12, 328, 1, 349, 12, 376, 115, 463, 126, 495, 1, 397, 12, 411, 1, 465, 12, 484, 1, 505, 12, 532, 277, 797, 288, 829, 1]

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

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