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.

A220100 Sum of the four nearest neighbors of n in a double spiral with positive integers and 1 at the center.

Table of values

n a(n)
1 18
2 27
3 26
4 42
5 42
6 34
7 35
8 42
9 42
10 74
11 74
12 58
13 58
14 66
15 66
16 106
17 106
18 82
19 82
20 90
21 90
22 98
23 98
24 106
25 106
26 154
27 154
28 122
29 122
30 130
31 130
32 138
33 138
34 146
35 146
36 202
37 202
38 162
39 162
40 170
41 170
42 178
43 178
44 186
45 186
46 194
47 194
48 202
49 202
50 266
51 266
52 218
53 218
54 226
55 226
56 234
57 234
58 242

List of values

[18, 27, 26, 42, 42, 34, 35, 42, 42, 74, 74, 58, 58, 66, 66, 106, 106, 82, 82, 90, 90, 98, 98, 106, 106, 154, 154, 122, 122, 130, 130, 138, 138, 146, 146, 202, 202, 162, 162, 170, 170, 178, 178, 186, 186, 194, 194, 202, 202, 266, 266, 218, 218, 226, 226, 234, 234, 242]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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