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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.

A129887 Start with 98, then write down the product of its digits, then add 5; repeat.

Table of values

n a(n)
1 98
2 72
3 77
4 49
5 54
6 20
7 25
8 10
9 15
10 5
11 10
12 0
13 5
14 5
15 10
16 0
17 5
18 5
19 10
20 0
21 10
22 0
23 5
24 5
25 10
26 0
27 5
28 5
29 10
30 0
31 10
32 0
33 5
34 5
35 10
36 0
37 5
38 5
39 10
40 0
41 10
42 0
43 5
44 5
45 10
46 0
47 5
48 5
49 10
50 0
51 10
52 0
53 5
54 5
55 10
56 0
57 5
58 5
59 10
60 0
61 10
62 0
63 5
64 5
65 10
66 0
67 5
68 5
69 10
70 0
71 10
72 0
73 5
74 5
75 10
76 0
77 5
78 5
79 10
80 0
81 10
82 0
83 5
84 5

List of values

[98, 72, 77, 49, 54, 20, 25, 10, 15, 5, 10, 0, 5, 5, 10, 0, 5, 5, 10, 0, 10, 0, 5, 5, 10, 0, 5, 5, 10, 0, 10, 0, 5, 5, 10, 0, 5, 5, 10, 0, 10, 0, 5, 5, 10, 0, 5, 5, 10, 0, 10, 0, 5, 5, 10, 0, 5, 5, 10, 0, 10, 0, 5, 5, 10, 0, 5, 5, 10, 0, 10, 0, 5, 5, 10, 0, 5, 5, 10, 0, 10, 0, 5, 5]

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