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.

A217743 Excess of number of odds in the form 4k+1 over number of odds in the form 4k+3 in Collatz trajectory of n.

Table of values

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

List of values

[1, 1, 1, 1, 2, 1, 2, 1, 3, 2, 3, 1, 3, 2, 0, 1, 4, 3, 3, 2, 2, 3, 1, 1, 4, 3, -6, 2, 4, 0, -6, 1, 5, 4, 2, 3, 3, 3, 2, 2, -5, 2, 4, 3, 5, 1, -5, 1, 4, 4, 4, 3, 3, -6, -6, 2, 5, 4, 3, 0, 2, -6, -8, 1, 5, 5, 3, 4, 4, 2, -4, 3, -5, 3, 2, 3, 5, 2, 2, 2, 3, -5, -5]