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.

A085211 Array A(x,y): concatenation of the binary expansions of x & y in such a way that 'y' is inserted after the least significant 1-bit of 'x', followed by the remaining 0-bits, if any. Listed antidiagonalwise as A(0,0), A(1,0), A(0,1), A(2,0), A(1,1), A(0,2), ... Zero is expanded as an empty string.

Table of values

n a(n)
0 0
1 1
2 1
3 2
4 3
5 2
6 3
7 6
8 6
9 3
10 4
11 7
12 12
13 7
14 4
15 5
16 12
17 14
18 14
19 12
20 5
21 6
22 11
23 24
24 15
25 24
26 13
27 6
28 7
29 14
30 22
31 28
32 28
33 26
34 14
35 7
36 8
37 15
38 28
39 23
40 48
41 29
42 28
43 15
44 8
45 9
46 24
47 30
48 30
49 44
50 52
51 30
52 30
53 24
54 9
55 10
56 19
57 48
58 31
59 56
60 45
61 56
62 31
63 48
64 25
65 10
66 11
67 22
68 38
69 56
70 60
71 58
72 46
73 60
74 56
75 50
76 26
77 11

List of values

[0, 1, 1, 2, 3, 2, 3, 6, 6, 3, 4, 7, 12, 7, 4, 5, 12, 14, 14, 12, 5, 6, 11, 24, 15, 24, 13, 6, 7, 14, 22, 28, 28, 26, 14, 7, 8, 15, 28, 23, 48, 29, 28, 15, 8, 9, 24, 30, 30, 44, 52, 30, 30, 24, 9, 10, 19, 48, 31, 56, 45, 56, 31, 48, 25, 10, 11, 22, 38, 56, 60, 58, 46, 60, 56, 50, 26, 11]