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.

A214859 Triangle read by rows, T(n,k) = n^2 - k*(k+1)/2 if k*(k+1)/2 <= n^2.

Table of values

n a(n)
0 0
1 1
2 0
3 4
4 3
5 1
6 9
7 8
8 6
9 3
10 16
11 15
12 13
13 10
14 6
15 1
16 25
17 24
18 22
19 19
20 15
21 10
22 4
23 36
24 35
25 33
26 30
27 26
28 21
29 15
30 8
31 0
32 49
33 48
34 46
35 43
36 39
37 34
38 28
39 21
40 13
41 4
42 64
43 63
44 61
45 58
46 54
47 49
48 43
49 36
50 28
51 19
52 9
53 81
54 80
55 78
56 75
57 71
58 66
59 60
60 53
61 45
62 36
63 26
64 15
65 3
66 100
67 99
68 97

List of values

[0, 1, 0, 4, 3, 1, 9, 8, 6, 3, 16, 15, 13, 10, 6, 1, 25, 24, 22, 19, 15, 10, 4, 36, 35, 33, 30, 26, 21, 15, 8, 0, 49, 48, 46, 43, 39, 34, 28, 21, 13, 4, 64, 63, 61, 58, 54, 49, 43, 36, 28, 19, 9, 81, 80, 78, 75, 71, 66, 60, 53, 45, 36, 26, 15, 3, 100, 99, 97]