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.

A214230 Sum of the eight nearest neighbors of n in a right triangular type-1 spiral with positive integers.

Table of values

n a(n)
1 53
2 88
3 78
4 125
5 85
6 84
7 125
8 97
9 108
10 143
11 223
12 168
13 158
14 169
15 201
16 284
17 208
18 183
19 179
20 187
21 210
22 281
23 226
24 219
25 227
26 235
27 261
28 314
29 430
30 339
31 311
32 310
33 318
34 326
35 346
36 396
37 515
38 403
39 360
40 347
41 355
42 363
43 371
44 379
45 411
46 509
47 427
48 411
49 419
50 427
51 435
52 443
53 451
54 486
55 557

List of values

[53, 88, 78, 125, 85, 84, 125, 97, 108, 143, 223, 168, 158, 169, 201, 284, 208, 183, 179, 187, 210, 281, 226, 219, 227, 235, 261, 314, 430, 339, 311, 310, 318, 326, 346, 396, 515, 403, 360, 347, 355, 363, 371, 379, 411, 509, 427, 411, 419, 427, 435, 443, 451, 486, 557]

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

Content is available under The OEIS End-User License Agreement.