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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.

A247084 a(n)=0 when n<=0: Starting with n=1, a(n) = 1 + the sum of the digital sums of a(0) through a(n-4).

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 1
5 2
6 3
7 4
8 5
9 7
10 10
11 14
12 19
13 26
14 27
15 32
16 42
17 50
18 59
19 64
20 70
21 75
22 89
23 99
24 106
25 118
26 135
27 153
28 160
29 170
30 179
31 188
32 195
33 203
34 220
35 237
36 252
37 257
38 261
39 273
40 282
41 296
42 305
43 317
44 329
45 346
46 354
47 365
48 379
49 392
50 404
51 418
52 437
53 451
54 459
55 472
56 486
57 496
58 514

List of values

[0, 1, 1, 1, 1, 2, 3, 4, 5, 7, 10, 14, 19, 26, 27, 32, 42, 50, 59, 64, 70, 75, 89, 99, 106, 118, 135, 153, 160, 170, 179, 188, 195, 203, 220, 237, 252, 257, 261, 273, 282, 296, 305, 317, 329, 346, 354, 365, 379, 392, 404, 418, 437, 451, 459, 472, 486, 496, 514]

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

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