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.

A161886 Number of nonzero elements in the n X n Redheffer matrix.

Table of values

n a(n)
1 1
2 4
3 7
4 11
5 14
6 19
7 22
8 27
9 31
10 36
11 39
12 46
13 49
14 54
15 59
16 65
17 68
18 75
19 78
20 85
21 90
22 95
23 98
24 107
25 111
26 116
27 121
28 128
29 131
30 140
31 143
32 150
33 155
34 160
35 165
36 175
37 178
38 183
39 188
40 197
41 200
42 209
43 212
44 219
45 226
46 231
47 234
48 245
49 249
50 256
51 261
52 268
53 271
54 280
55 285
56 294
57 299
58 304

List of values

[1, 4, 7, 11, 14, 19, 22, 27, 31, 36, 39, 46, 49, 54, 59, 65, 68, 75, 78, 85, 90, 95, 98, 107, 111, 116, 121, 128, 131, 140, 143, 150, 155, 160, 165, 175, 178, 183, 188, 197, 200, 209, 212, 219, 226, 231, 234, 245, 249, 256, 261, 268, 271, 280, 285, 294, 299, 304]