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.

A101881 Write two numbers, skip one, write two, skip two, write two, skip three ... and so on.

Table of values

n a(n)
0 1
1 2
2 4
3 5
4 8
5 9
6 13
7 14
8 19
9 20
10 26
11 27
12 34
13 35
14 43
15 44
16 53
17 54
18 64
19 65
20 76
21 77
22 89
23 90
24 103
25 104
26 118
27 119
28 134
29 135
30 151
31 152
32 169
33 170
34 188
35 189
36 208
37 209
38 229
39 230
40 251
41 252
42 274
43 275
44 298
45 299
46 323
47 324
48 349
49 350
50 376
51 377
52 404
53 405
54 433
55 434
56 463
57 464
58 494

List of values

[1, 2, 4, 5, 8, 9, 13, 14, 19, 20, 26, 27, 34, 35, 43, 44, 53, 54, 64, 65, 76, 77, 89, 90, 103, 104, 118, 119, 134, 135, 151, 152, 169, 170, 188, 189, 208, 209, 229, 230, 251, 252, 274, 275, 298, 299, 323, 324, 349, 350, 376, 377, 404, 405, 433, 434, 463, 464, 494]

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

Content is available under The OEIS End-User License Agreement.