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.

A120173 a(n) = 4 + floor((3 + Sum_{j=1..n-1} a(j))/5).

Table of values

n a(n)
1 4
2 5
3 6
4 7
5 9
6 10
7 12
8 15
9 18
10 21
11 26
12 31
13 37
14 44
15 53
16 64
17 77
18 92
19 110
20 132
21 159
22 191
23 229
24 275
25 330
26 396
27 475
28 570
29 684
30 821
31 985
32 1182
33 1418
34 1702
35 2042
36 2451
37 2941
38 3529
39 4235
40 5082

List of values

[4, 5, 6, 7, 9, 10, 12, 15, 18, 21, 26, 31, 37, 44, 53, 64, 77, 92, 110, 132, 159, 191, 229, 275, 330, 396, 475, 570, 684, 821, 985, 1182, 1418, 1702, 2042, 2451, 2941, 3529, 4235, 5082]