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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.

A329725 a(1)=0, a(n) = n - (product of nonzero digits of n) - a(n-1).

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
10 9
11 1
12 9
13 1
14 9
15 1
16 9
17 1
18 9
19 1
20 17
21 2
22 16
23 1
24 15
25 0
26 14
27 -1
28 13
29 -2
30 29
31 -1
32 27
33 -3
34 25
35 -5
36 23
37 -7
38 21
39 -9
40 45
41 -8
42 42
43 -11
44 39
45 -14
46 36
47 -17
48 33
49 -20
50 65
51 -19
52 61
53 -23
54 57
55 -27
56 53
57 -31
58 49
59 -35
60 89
61 -34
62 84
63 -39
64 79
65 -44
66 74
67 -49
68 69
69 -54
70 117

List of values

[0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 1, 9, 1, 9, 1, 9, 1, 9, 1, 17, 2, 16, 1, 15, 0, 14, -1, 13, -2, 29, -1, 27, -3, 25, -5, 23, -7, 21, -9, 45, -8, 42, -11, 39, -14, 36, -17, 33, -20, 65, -19, 61, -23, 57, -27, 53, -31, 49, -35, 89, -34, 84, -39, 79, -44, 74, -49, 69, -54, 117]

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