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.

A004207 a(0) = 1, a(n) = sum of digits of all previous terms.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 8
5 16
6 23
7 28
8 38
9 49
10 62
11 70
12 77
13 91
14 101
15 103
16 107
17 115
18 122
19 127
20 137
21 148
22 161
23 169
24 185
25 199
26 218
27 229
28 242
29 250
30 257
31 271
32 281
33 292
34 305
35 313
36 320
37 325
38 335
39 346
40 359
41 376
42 392
43 406
44 416
45 427
46 440
47 448
48 464
49 478
50 497
51 517
52 530
53 538

List of values

[1, 1, 2, 4, 8, 16, 23, 28, 38, 49, 62, 70, 77, 91, 101, 103, 107, 115, 122, 127, 137, 148, 161, 169, 185, 199, 218, 229, 242, 250, 257, 271, 281, 292, 305, 313, 320, 325, 335, 346, 359, 376, 392, 406, 416, 427, 440, 448, 464, 478, 497, 517, 530, 538]