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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.

A322108 Distance of n-th iteration in an alternating rectangular spiral.

Table of values

n a(n)
1 1
2 3
3 7
4 15
5 29
6 50
7 79
8 118
9 169
10 233
11 311
12 405
13 517
14 648
15 799
16 972
17 1169
18 1391
19 1639
20 1915
21 2221
22 2558
23 2927
24 3330
25 3769
26 4245
27 4759
28 5313
29 5909
30 6548
31 7231
32 7960
33 8737
34 9563
35 10439
36 11367
37 12349
38 13386
39 14479

List of values

[1, 3, 7, 15, 29, 50, 79, 118, 169, 233, 311, 405, 517, 648, 799, 972, 1169, 1391, 1639, 1915, 2221, 2558, 2927, 3330, 3769, 4245, 4759, 5313, 5909, 6548, 7231, 7960, 8737, 9563, 10439, 11367, 12349, 13386, 14479]

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

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