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.

A218450 Number of digits of n plus number of digits of n equal to 1, 2, 4, or 8.

Table of values

n a(n)
1 2
2 2
3 1
4 2
5 1
6 1
7 1
8 2
9 1
10 3
11 4
12 4
13 3
14 4
15 3
16 3
17 3
18 4
19 3
20 3
21 4
22 4
23 3
24 4
25 3
26 3
27 3
28 4
29 3
30 2
31 3
32 3
33 2
34 3
35 2
36 2
37 2
38 3
39 2
40 3
41 4
42 4
43 3
44 4
45 3
46 3
47 3
48 4
49 3
50 2
51 3
52 3
53 2
54 3
55 2
56 2
57 2
58 3
59 2
60 2
61 3
62 3
63 2
64 3
65 2
66 2
67 2
68 3
69 2
70 2
71 3
72 3
73 2
74 3
75 2
76 2
77 2
78 3
79 2
80 3
81 4
82 4
83 3
84 4
85 3
86 3
87 3

List of values

[2, 2, 1, 2, 1, 1, 1, 2, 1, 3, 4, 4, 3, 4, 3, 3, 3, 4, 3, 3, 4, 4, 3, 4, 3, 3, 3, 4, 3, 2, 3, 3, 2, 3, 2, 2, 2, 3, 2, 3, 4, 4, 3, 4, 3, 3, 3, 4, 3, 2, 3, 3, 2, 3, 2, 2, 2, 3, 2, 2, 3, 3, 2, 3, 2, 2, 2, 3, 2, 2, 3, 3, 2, 3, 2, 2, 2, 3, 2, 3, 4, 4, 3, 4, 3, 3, 3]