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.

A187331 a(n) = Sum_{k=1..4} floor(k*n/4).

Table of values

n a(n)
0 0
1 1
2 4
3 6
4 10
5 11
6 14
7 16
8 20
9 21
10 24
11 26
12 30
13 31
14 34
15 36
16 40
17 41
18 44
19 46
20 50
21 51
22 54
23 56
24 60
25 61
26 64
27 66
28 70
29 71
30 74
31 76
32 80
33 81
34 84
35 86
36 90
37 91
38 94
39 96
40 100
41 101
42 104
43 106
44 110
45 111
46 114
47 116
48 120
49 121
50 124
51 126
52 130
53 131
54 134
55 136
56 140
57 141
58 144
59 146
60 150
61 151
62 154
63 156
64 160
65 161
66 164

List of values

[0, 1, 4, 6, 10, 11, 14, 16, 20, 21, 24, 26, 30, 31, 34, 36, 40, 41, 44, 46, 50, 51, 54, 56, 60, 61, 64, 66, 70, 71, 74, 76, 80, 81, 84, 86, 90, 91, 94, 96, 100, 101, 104, 106, 110, 111, 114, 116, 120, 121, 124, 126, 130, 131, 134, 136, 140, 141, 144, 146, 150, 151, 154, 156, 160, 161, 164]