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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.

A327246 a(1) = 0; build a(n+1) by concatenating 2 strings: first, the number of digits of a(n), second, the number of terms with same number of digits as a(n) up to a(n).

Table of values

n a(n)
1 0
2 11
3 21
4 22
5 23
6 24
7 25
8 26
9 27
10 28
11 29
12 210
13 31
14 211
15 32
16 212
17 33
18 213
19 34
20 214
21 35
22 215
23 36
24 216
25 37
26 217
27 38
28 218
29 39
30 219
31 310
32 311
33 312
34 313
35 314
36 315
37 316
38 317
39 318
40 319
41 320
42 321
43 322
44 323
45 324
46 325
47 326
48 327
49 328
50 329
51 330
52 331
53 332
54 333
55 334
56 335

List of values

[0, 11, 21, 22, 23, 24, 25, 26, 27, 28, 29, 210, 31, 211, 32, 212, 33, 213, 34, 214, 35, 215, 36, 216, 37, 217, 38, 218, 39, 219, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335]

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

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