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.

A090861 Permutation of natural numbers arising from a spiral.

Table of values

n a(n)
1 1
2 6
3 5
4 4
5 3
6 2
7 9
8 8
9 7
10 20
11 19
12 18
13 17
14 16
15 15
16 14
17 13
18 12
19 11
20 10
21 25
22 24
23 23
24 22
25 21
26 42
27 41
28 40
29 39
30 38
31 37
32 36
33 35
34 34
35 33
36 32
37 31
38 30
39 29
40 28
41 27
42 26
43 49
44 48
45 47
46 46
47 45
48 44
49 43
50 72
51 71
52 70
53 69
54 68
55 67
56 66
57 65
58 64
59 63
60 62
61 61
62 60
63 59
64 58
65 57
66 56
67 55
68 54
69 53
70 52
71 51
72 50

List of values

[1, 6, 5, 4, 3, 2, 9, 8, 7, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 25, 24, 23, 22, 21, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 49, 48, 47, 46, 45, 44, 43, 72, 71, 70, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50]

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

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