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.

A243021 Numbers n such that n appears in the sequence beginning with the digit-sum of n and extended by adding successive digit-sums.

Table of values

n a(n)
1 12
2 15
3 18
4 21
5 24
6 27
7 30
8 32
9 33
10 36
11 37
12 39
13 45
14 47
15 51
16 52
17 54
18 57
19 58
20 59
21 62
22 63
23 69
24 72
25 81
26 84
27 90
28 96
29 99
30 101
31 103
32 107
33 109
34 111
35 114
36 115
37 117
38 119
39 120
40 123
41 126
42 129
43 135
44 141
45 144
46 147
47 153
48 159
49 161
50 162
51 163
52 169
53 171
54 173
55 174
56 180
57 184
58 185
59 186
60 189
61 197
62 199
63 201
64 204
65 207
66 210
67 213
68 216
69 219
70 221
71 225
72 226
73 231
74 234
75 236
76 237

List of values

[12, 15, 18, 21, 24, 27, 30, 32, 33, 36, 37, 39, 45, 47, 51, 52, 54, 57, 58, 59, 62, 63, 69, 72, 81, 84, 90, 96, 99, 101, 103, 107, 109, 111, 114, 115, 117, 119, 120, 123, 126, 129, 135, 141, 144, 147, 153, 159, 161, 162, 163, 169, 171, 173, 174, 180, 184, 185, 186, 189, 197, 199, 201, 204, 207, 210, 213, 216, 219, 221, 225, 226, 231, 234, 236, 237]