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.

A319678 Numbers with property that the first digit is the length of the number (written in base 10).

Table of values

n a(n)
1 1
2 20
3 21
4 22
5 23
6 24
7 25
8 26
9 27
10 28
11 29
12 300
13 301
14 302
15 303
16 304
17 305
18 306
19 307
20 308
21 309
22 310
23 311
24 312
25 313
26 314
27 315
28 316
29 317
30 318
31 319
32 320
33 321
34 322
35 323
36 324
37 325
38 326
39 327
40 328
41 329
42 330
43 331
44 332
45 333
46 334
47 335
48 336
49 337
50 338
51 339
52 340
53 341
54 342
55 343
56 344
57 345
58 346
59 347
60 348
61 349
62 350

List of values

[1, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 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, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350]

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

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