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.

A083087 Square table read by antidiagonals which forms a permutation of the natural numbers: T(n,0) = floor(n*x/(x-1))+1, T(n,k+1) = ceiling(x*T(n,k)), for n>=0, k>=0, where x = 1 + sqrt(2).

Table of values

n a(n)
0 1
1 3
2 2
3 8
4 5
5 4
6 20
7 13
8 10
9 6
10 49
11 32
12 25
13 15
14 7
15 119
16 78
17 61
18 37
19 17
20 9
21 288
22 189
23 148
24 90
25 42
26 22
27 11
28 696
29 457
30 358
31 218
32 102
33 54
34 27
35 12
36 1681
37 1104
38 865
39 527
40 247
41 131
42 66
43 29
44 14
45 4059
46 2666
47 2089
48 1273
49 597
50 317
51 160
52 71
53 34
54 16
55 9800
56 6437
57 5044
58 3074

List of values

[1, 3, 2, 8, 5, 4, 20, 13, 10, 6, 49, 32, 25, 15, 7, 119, 78, 61, 37, 17, 9, 288, 189, 148, 90, 42, 22, 11, 696, 457, 358, 218, 102, 54, 27, 12, 1681, 1104, 865, 527, 247, 131, 66, 29, 14, 4059, 2666, 2089, 1273, 597, 317, 160, 71, 34, 16, 9800, 6437, 5044, 3074]