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.

A078784 Primes on axis of Ulam square spiral (with rows ... / 7 8 9 / 6 1 2 / 5 4 3 / ... ) with origin at (1).

Table of values

n a(n)
1 2
2 11
3 19
4 23
5 53
6 61
7 127
8 139
9 151
10 163
11 233
12 281
13 431
14 541
15 613
16 743
17 827
18 977
19 1009
20 1279
21 1621
22 1871
23 2003
24 2281
25 2377
26 2731
27 3109
28 3221
29 3511
30 3571
31 3631
32 3691
33 4001
34 4129
35 4523
36 4591
37 5077
38 6361
39 6521
40 7789
41 7877
42 8419
43 9851
44 10151
45 10973
46 11503
47 11719
48 11827
49 12377
50 12601
51 12713
52 13399

List of values

[2, 11, 19, 23, 53, 61, 127, 139, 151, 163, 233, 281, 431, 541, 613, 743, 827, 977, 1009, 1279, 1621, 1871, 2003, 2281, 2377, 2731, 3109, 3221, 3511, 3571, 3631, 3691, 4001, 4129, 4523, 4591, 5077, 6361, 6521, 7789, 7877, 8419, 9851, 10151, 10973, 11503, 11719, 11827, 12377, 12601, 12713, 13399]

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

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