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.

A089607 a(n)=((-1)^(n+1)*A002425(n)) modulo 4.

Table of values

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

List of values

[1, 3, 1, 3, 3, 1, 1, 3, 3, 3, 1, 1, 3, 1, 1, 3, 3, 3, 1, 3, 3, 1, 1, 1, 3, 3, 1, 1, 3, 1, 1, 3, 3, 3, 1, 3, 3, 1, 1, 3, 3, 3, 1, 1, 3, 1, 1, 1, 3, 3, 1, 3, 3, 1, 1, 1, 3, 3, 1, 1, 3, 1, 1, 3, 3, 3, 1, 3, 3, 1, 1, 3, 3, 3, 1, 1, 3, 1, 1, 3, 3, 3, 1, 3, 3, 1, 1, 1, 3, 3, 1, 1, 3, 1, 1, 1, 3, 3, 1, 3, 3, 1, 1, 3, 3]