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.

A080678 Rooted at a(0)=0 and a(1)=a(2)=a(3)=1, 4 cases of index mod 4: a(4n)=4*a(n), a(4n+1)= 3*a(n)+a(n+1), a(4n+2) = 2*a(n)+2*a(n+1), and a(4n+3) = a(n)+3*a(n+1).

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 4
5 4
6 4
7 4
8 4
9 4
10 4
11 4
12 4
13 7
14 10
15 13
16 16
17 16
18 16
19 16
20 16
21 16
22 16
23 16
24 16
25 16
26 16
27 16
28 16
29 16
30 16
31 16
32 16
33 16
34 16
35 16
36 16
37 16
38 16
39 16
40 16
41 16
42 16
43 16
44 16
45 16
46 16
47 16
48 16
49 19
50 22
51 25
52 28
53 31
54 34
55 37
56 40
57 43
58 46
59 49
60 52
61 55
62 58
63 61
64 64
65 64
66 64
67 64
68 64
69 64
70 64
71 64
72 64
73 64
74 64
75 64
76 64

List of values

[0, 1, 1, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 7, 10, 13, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 19, 22, 25, 28, 31, 34, 37, 40, 43, 46, 49, 52, 55, 58, 61, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64]