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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.

A308003 A modified Sisyphus function: a(n) = concatenation of (number of even digits in n) (number of digits in n) (number of odd digits in n).

Table of values

n a(n)
0 110
1 11
2 110
3 11
4 110
5 11
6 110
7 11
8 110
9 11
10 121
11 22
12 121
13 22
14 121
15 22
16 121
17 22
18 121
19 22
20 220
21 121
22 220
23 121
24 220
25 121
26 220
27 121
28 220
29 121
30 121
31 22
32 121
33 22
34 121
35 22
36 121
37 22
38 121
39 22
40 220
41 121
42 220
43 121
44 220
45 121
46 220
47 121
48 220
49 121
50 121
51 22
52 121
53 22
54 121

List of values

[110, 11, 110, 11, 110, 11, 110, 11, 110, 11, 121, 22, 121, 22, 121, 22, 121, 22, 121, 22, 220, 121, 220, 121, 220, 121, 220, 121, 220, 121, 121, 22, 121, 22, 121, 22, 121, 22, 121, 22, 220, 121, 220, 121, 220, 121, 220, 121, 220, 121, 121, 22, 121, 22, 121]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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