cp's OEIS Frontend

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.

A343639 a(n) = (Sum of digits of 9*n) / 9.

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
10 1
11 2
12 1
13 1
14 1
15 1
16 1
17 1
18 1
19 1
20 1
21 2
22 2
23 1
24 1
25 1
26 1
27 1
28 1
29 1
30 1
31 2
32 2
33 2
34 1
35 1
36 1
37 1
38 1
39 1
40 1
41 2
42 2
43 2
44 2
45 1
46 1
47 1
48 1
49 1
50 1
51 2
52 2
53 2
54 2
55 2
56 1
57 1
58 1
59 1
60 1
61 2
62 2
63 2
64 2
65 2
66 2
67 1
68 1
69 1
70 1
71 2
72 2
73 2
74 2
75 2
76 2
77 2
78 1
79 1
80 1
81 2
82 2
83 2
84 2
85 2
86 2
87 2
88 2
89 1
90 1
91 2
92 2
93 2
94 2
95 2
96 2
97 2
98 2
99 2

List of values

[0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2]