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.

A195609 Numbers n such that Sum_{i=1..n} A(i) = A(n)*A(n+1)/4, where A(n) = A000069(n).

Table of values

n a(n)
1 3
2 4
3 5
4 9
5 15
6 16
7 17
8 23
9 27
10 28
11 29
12 33
13 39
14 43
15 44
16 45
17 51
18 52
19 53
20 57
21 63
22 64
23 65
24 71
25 75
26 76
27 77
28 83
29 84
30 85
31 89
32 95
33 99
34 100
35 101
36 105
37 111
38 112
39 113
40 119
41 123
42 124
43 125
44 129
45 135
46 139
47 140
48 141
49 147
50 148
51 149
52 153
53 159
54 163
55 164
56 165
57 169
58 175
59 176

List of values

[3, 4, 5, 9, 15, 16, 17, 23, 27, 28, 29, 33, 39, 43, 44, 45, 51, 52, 53, 57, 63, 64, 65, 71, 75, 76, 77, 83, 84, 85, 89, 95, 99, 100, 101, 105, 111, 112, 113, 119, 123, 124, 125, 129, 135, 139, 140, 141, 147, 148, 149, 153, 159, 163, 164, 165, 169, 175, 176]