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.

A153453 a(n) = letters(n) + a(n-1); a(0) = 0 in Spanish.

Table of values

n a(n)
0 0
1 3
2 6
3 10
4 16
5 21
6 25
7 30
8 34
9 39
10 43
11 47
12 51
13 56
14 63
15 69
16 78
17 88
18 97
19 107
20 113
21 122
22 131
23 141
24 153
25 164
26 174
27 185
28 195
29 206
30 213
31 224
32 235
33 247
34 261
35 274
36 286
37 299
38 311
39 324
40 332
41 344
42 356
43 369
44 384
45 398
46 411
47 425
48 438
49 452
50 461
51 474
52 487
53 501
54 517
55 532
56 546
57 561
58 575
59 590
60 597

List of values

[0, 3, 6, 10, 16, 21, 25, 30, 34, 39, 43, 47, 51, 56, 63, 69, 78, 88, 97, 107, 113, 122, 131, 141, 153, 164, 174, 185, 195, 206, 213, 224, 235, 247, 261, 274, 286, 299, 311, 324, 332, 344, 356, 369, 384, 398, 411, 425, 438, 452, 461, 474, 487, 501, 517, 532, 546, 561, 575, 590, 597]

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

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