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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.

A350414 a(1)=1; for n > 1, a(n) = a(n-1) + (sum of odd-indexed digits of a(n-1)) - (sum of even-indexed digits of a(n-1)).

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 16
6 21
7 20
8 18
9 25
10 28
11 34
12 35
13 37
14 41
15 38
16 43
17 42
18 40
19 36
20 39
21 45
22 46
23 48
24 52
25 49
26 54
27 53
28 51
29 47
30 50
31 45
32 46
33 48
34 52
35 49
36 54
37 53
38 51
39 47
40 50
41 45
42 46
43 48
44 52
45 49
46 54
47 53
48 51
49 47
50 50
51 45
52 46
53 48
54 52
55 49
56 54
57 53
58 51
59 47
60 50
61 45
62 46
63 48
64 52
65 49
66 54
67 53
68 51
69 47
70 50
71 45

List of values

[1, 2, 4, 8, 16, 21, 20, 18, 25, 28, 34, 35, 37, 41, 38, 43, 42, 40, 36, 39, 45, 46, 48, 52, 49, 54, 53, 51, 47, 50, 45, 46, 48, 52, 49, 54, 53, 51, 47, 50, 45, 46, 48, 52, 49, 54, 53, 51, 47, 50, 45, 46, 48, 52, 49, 54, 53, 51, 47, 50, 45, 46, 48, 52, 49, 54, 53, 51, 47, 50, 45]

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