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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.

A080519 Positions of the letter t in the French phrase enumerating these positions, "T est la première, quatrième, dix-huitième, trentième, trente-cinquième,... lettre dans cette phrase...".

Table of values

n a(n)
1 1
2 4
3 18
4 30
5 35
6 39
7 44
8 48
9 59
10 63
11 79
12 84
13 96
14 101
15 113
16 129
17 131
18 146
19 162
20 169
21 173
22 182
23 189
24 201
25 203
26 213
27 214
28 226
29 231
30 243
31 244
32 248
33 251
34 261
35 268
36 280
37 287
38 300
39 307
40 320
41 327
42 329
43 341
44 345
45 352
46 364
47 368
48 375
49 391
50 393
51 407
52 408
53 424
54 425

List of values

[1, 4, 18, 30, 35, 39, 44, 48, 59, 63, 79, 84, 96, 101, 113, 129, 131, 146, 162, 169, 173, 182, 189, 201, 203, 213, 214, 226, 231, 243, 244, 248, 251, 261, 268, 280, 287, 300, 307, 320, 327, 329, 341, 345, 352, 364, 368, 375, 391, 393, 407, 408, 424, 425]

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

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