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.

A215468 Sum of the 8 nearest neighbors of n in a rotated-square spiral with positive integers.

Table of values

n a(n)
1 50
2 62
3 72
4 86
5 76
6 84
7 122
8 88
9 144
10 104
11 166
12 120
13 152
14 160
15 144
16 218
17 160
18 168
19 248
20 184
21 192
22 278
23 208
24 216
25 260
26 268
27 240
28 248
29 346
30 264
31 272
32 280
33 384
34 296
35 304
36 312
37 422
38 328
39 336
40 344
41 400
42 408
43 368
44 376
45 384
46 506
47 400
48 408
49 416
50 424
51 552
52 440
53 448
54 456
55 464
56 598

List of values

[50, 62, 72, 86, 76, 84, 122, 88, 144, 104, 166, 120, 152, 160, 144, 218, 160, 168, 248, 184, 192, 278, 208, 216, 260, 268, 240, 248, 346, 264, 272, 280, 384, 296, 304, 312, 422, 328, 336, 344, 400, 408, 368, 376, 384, 506, 400, 408, 416, 424, 552, 440, 448, 456, 464, 598]

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

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