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.

A249013 a(n) = floor( (n-1) * (n+4) / 10 ).

Table of values

n a(n)
1 0
2 0
3 1
4 2
5 3
6 5
7 6
8 8
9 10
10 12
11 15
12 17
13 20
14 23
15 26
16 30
17 33
18 37
19 41
20 45
21 50
22 54
23 59
24 64
25 69
26 75
27 80
28 86
29 92
30 98
31 105
32 111
33 118
34 125
35 132
36 140
37 147
38 155
39 163
40 171
41 180
42 188
43 197
44 206
45 215
46 225
47 234
48 244
49 254
50 264
51 275
52 285
53 296
54 307
55 318
56 330
57 341
58 353
59 365

List of values

[0, 0, 1, 2, 3, 5, 6, 8, 10, 12, 15, 17, 20, 23, 26, 30, 33, 37, 41, 45, 50, 54, 59, 64, 69, 75, 80, 86, 92, 98, 105, 111, 118, 125, 132, 140, 147, 155, 163, 171, 180, 188, 197, 206, 215, 225, 234, 244, 254, 264, 275, 285, 296, 307, 318, 330, 341, 353, 365]