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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.

A218217 a(n) = (x(n+1) - x(n))^2 + (y(n+1) - y(n))^2, where x(n)^2 + y(n)^2 = A055025(n) is norm of Gaussian prime and x(n) >= y(n) >= 0.

Table of values

n a(n)
1 1
2 2
3 4
4 2
5 2
6 2
7 10
8 20
9 4
10 10
11 8
12 4
13 2
14 10
15 4
16 20
17 58
18 16
19 10
20 2
21 20
22 58
23 8
24 40
25 2
26 40
27 20
28 10
29 90
30 2
31 20
32 10
33 116
34 2
35 8
36 20
37 10
38 68
39 50
40 10
41 20
42 26
43 4
44 146
45 8
46 34
47 10
48 40
49 34
50 40
51 130
52 104
53 20
54 2
55 160
56 50
57 10
58 180
59 2
60 180
61 90
62 58
63 40
64 130
65 16
66 116
67 194
68 50

List of values

[1, 2, 4, 2, 2, 2, 10, 20, 4, 10, 8, 4, 2, 10, 4, 20, 58, 16, 10, 2, 20, 58, 8, 40, 2, 40, 20, 10, 90, 2, 20, 10, 116, 2, 8, 20, 10, 68, 50, 10, 20, 26, 4, 146, 8, 34, 10, 40, 34, 40, 130, 104, 20, 2, 160, 50, 10, 180, 2, 180, 90, 58, 40, 130, 16, 116, 194, 50]

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