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.

A383109 Consider the isosceles triangle whose vertices are the Gaussian integers z1=0, z2 = x+i*y, z3=x-i*y. The sequence lists the pairs of positive integer foci (f_i, f_j), f_i < f_j of Steiner inellipse for some z2, z3.

Table of values

n a(n)
1 3
2 5
3 6
4 10
5 9
6 15
7 13
8 15
9 12
10 20
11 15
12 25
13 18
14 30
15 15
16 37
17 15
18 41
19 17
20 39
21 21
22 35
23 26
24 30
25 24
26 40
27 27
28 45
29 25
30 51
31 30
32 50
33 39
34 45
35 33
36 55
37 36
38 60
39 29
40 75
41 30
42 74
43 39
44 65
45 51
46 53
47 30
48 82
49 34
50 78
51 42
52 70
53 52
54 60
55 45
56 75
57 39
58 85
59 48
60 80
61 51
62 85
63 65
64 75
65 54
66 90
67 61

List of values

[3, 5, 6, 10, 9, 15, 13, 15, 12, 20, 15, 25, 18, 30, 15, 37, 15, 41, 17, 39, 21, 35, 26, 30, 24, 40, 27, 45, 25, 51, 30, 50, 39, 45, 33, 55, 36, 60, 29, 75, 30, 74, 39, 65, 51, 53, 30, 82, 34, 78, 42, 70, 52, 60, 45, 75, 39, 85, 48, 80, 51, 85, 65, 75, 54, 90, 61]