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.

A168026 Noncomposite numbers in the southwestern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American.

Table of values

n a(n)
1 1
2 7
3 43
4 73
5 157
6 211
7 421
8 601
9 1483
10 2551
11 2971
12 3907
13 4423
14 6163
15 6481
16 8191
17 12211
18 19183
19 22651
20 26407
21 27061
22 28393
23 31153
24 35533
25 37057
26 37831
27 42643
28 47743
29 55933
30 60763
31 71023
32 74257
33 77563
34 83233
35 84391
36 98911
37 110557
38 113233

List of values

[1, 7, 43, 73, 157, 211, 421, 601, 1483, 2551, 2971, 3907, 4423, 6163, 6481, 8191, 12211, 19183, 22651, 26407, 27061, 28393, 31153, 35533, 37057, 37831, 42643, 47743, 55933, 60763, 71023, 74257, 77563, 83233, 84391, 98911, 110557, 113233]

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

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