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.

A231664 a(n) = Sum_{i=0..n} digsum_4(i), where digsum_4(i) = A053737(i).

Table of values

n a(n)
0 0
1 1
2 3
3 6
4 7
5 9
6 12
7 16
8 18
9 21
10 25
11 30
12 33
13 37
14 42
15 48
16 49
17 51
18 54
19 58
20 60
21 63
22 67
23 72
24 75
25 79
26 84
27 90
28 94
29 99
30 105
31 112
32 114
33 117
34 121
35 126
36 129
37 133
38 138
39 144
40 148
41 153
42 159
43 166
44 171
45 177
46 184
47 192
48 195
49 199
50 204
51 210
52 214
53 219
54 225
55 232
56 237
57 243
58 250
59 258
60 264
61 271
62 279
63 288
64 289
65 291
66 294
67 298
68 300
69 303
70 307
71 312
72 315
73 319
74 324
75 330
76 334
77 339
78 345
79 352
80 354
81 357

List of values

[0, 1, 3, 6, 7, 9, 12, 16, 18, 21, 25, 30, 33, 37, 42, 48, 49, 51, 54, 58, 60, 63, 67, 72, 75, 79, 84, 90, 94, 99, 105, 112, 114, 117, 121, 126, 129, 133, 138, 144, 148, 153, 159, 166, 171, 177, 184, 192, 195, 199, 204, 210, 214, 219, 225, 232, 237, 243, 250, 258, 264, 271, 279, 288, 289, 291, 294, 298, 300, 303, 307, 312, 315, 319, 324, 330, 334, 339, 345, 352, 354, 357]