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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.

A178052 Digit sums of mountain numbers (cf. A134941).

Table of values

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

List of values

[1, 4, 5, 6, 7, 8, 9, 10, 11, 7, 8, 9, 10, 11, 12, 13, 7, 9, 10, 11, 12, 13, 14, 8, 9, 11, 12, 13, 14, 15, 9, 10, 11, 13, 14, 15, 16, 10, 11, 12, 13, 15, 16, 17, 11, 12, 13, 14, 15, 17, 18, 12, 13, 14, 15, 16, 17, 19, 13, 14, 15, 16, 17, 18, 19, 9, 11, 12, 13, 14, 15, 16, 10, 11, 13, 14]

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