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.

A013706 Decimal expansion of 2*Sum_{k=1..50000} (-1)^(k-1)/(2k-1).

Table of values

n a(n)
1 1
2 5
3 7
4 0
5 7
6 8
7 6
8 3
9 2
10 6
11 7
12 9
13 4
14 8
15 9
16 7
17 6
18 1
19 9
20 2
21 3
22 1
23 3
24 2
25 1
26 1
27 9
28 1
29 6
30 3
31 9
32 7
33 5
34 2
35 0
36 5
37 2
38 0
39 9
40 8
41 5
42 8
43 3
44 3
45 1
46 4
47 6
48 8
49 7
50 5
51 5
52 7
53 9
54 6
55 2
56 5
57 8
58 7
59 4
60 4
61 5
62 2
63 6
64 8
65 5
66 0
67 4
68 1
69 0
70 7
71 5
72 6
73 4
74 1
75 2
76 2
77 1
78 6
79 5
80 3
81 4
82 8
83 1
84 2
85 3
86 5
87 6
88 6
89 2
90 0
91 9
92 0
93 5
94 5
95 0
96 9
97 7
98 3
99 5
100 2
101 6
102 8
103 8
104 4
105 3
106 6
107 3
108 2
109 7
110 4
111 2
112 5
113 0
114 9
115 3
116 7
117 0
118 4
119 8
120 2
121 5
122 0
123 6
124 1
125 9
126 3

List of values

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