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.

A049455 Triangle read by rows: T(n,k) = numerator of fraction in k-th term of n-th row of variant of Farey series.

Table of values

n a(n)
1 0
2 1
3 0
4 1
5 1
6 0
7 1
8 1
9 2
10 1
11 0
12 1
13 1
14 2
15 1
16 3
17 2
18 3
19 1
20 0
21 1
22 1
23 2
24 1
25 3
26 2
27 3
28 1
29 4
30 3
31 5
32 2
33 5
34 3
35 4
36 1
37 0
38 1
39 1
40 2
41 1
42 3
43 2
44 3
45 1
46 4
47 3
48 5
49 2
50 5
51 3
52 4
53 1
54 5
55 4
56 7
57 3
58 8
59 5
60 7
61 2
62 7
63 5
64 8
65 3
66 7
67 4
68 5
69 1
70 0
71 1
72 1
73 2
74 1
75 3
76 2
77 3
78 1
79 4
80 3
81 5
82 2
83 5
84 3
85 4
86 1
87 5
88 4
89 7
90 3
91 8
92 5
93 7
94 2
95 7
96 5
97 8
98 3
99 7
100 4
101 5
102 1
103 6
104 5
105 9

List of values

[0, 1, 0, 1, 1, 0, 1, 1, 2, 1, 0, 1, 1, 2, 1, 3, 2, 3, 1, 0, 1, 1, 2, 1, 3, 2, 3, 1, 4, 3, 5, 2, 5, 3, 4, 1, 0, 1, 1, 2, 1, 3, 2, 3, 1, 4, 3, 5, 2, 5, 3, 4, 1, 5, 4, 7, 3, 8, 5, 7, 2, 7, 5, 8, 3, 7, 4, 5, 1, 0, 1, 1, 2, 1, 3, 2, 3, 1, 4, 3, 5, 2, 5, 3, 4, 1, 5, 4, 7, 3, 8, 5, 7, 2, 7, 5, 8, 3, 7, 4, 5, 1, 6, 5, 9]