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.

A257325 Construct spiral of numbers on square grid as in Comments; sequence gives terms along the "2" arm.

Table of values

n a(n)
1 2
2 5
3 7
4 11
5 3
6 13
7 17
8 4
9 19
10 6
11 23
12 8
13 29
14 14
15 9
16 25
17 21
18 31
19 15
20 16
21 37
22 41
23 27
24 43
25 33
26 47
27 49
28 39
29 53
30 45
31 59
32 35
33 51
34 61
35 10
36 67
37 20
38 71
39 26
40 57
41 73
42 79
43 32
44 65
45 12
46 55
47 18
48 77
49 24
50 83
51 89
52 34
53 69
54 38
55 85
56 22
57 95
58 28
59 75
60 91
61 81
62 97
63 87
64 101
65 63
66 103
67 93

List of values

[2, 5, 7, 11, 3, 13, 17, 4, 19, 6, 23, 8, 29, 14, 9, 25, 21, 31, 15, 16, 37, 41, 27, 43, 33, 47, 49, 39, 53, 45, 59, 35, 51, 61, 10, 67, 20, 71, 26, 57, 73, 79, 32, 65, 12, 55, 18, 77, 24, 83, 89, 34, 69, 38, 85, 22, 95, 28, 75, 91, 81, 97, 87, 101, 63, 103, 93]

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

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