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.

A057105 Triangle of numbers (when unsigned) related to congruum problem: T(n,k)=k^2+2nk-n^2 with n>k>0 and starting at T(2,1)=1.

Table of values

n a(n)
1 1
2 -2
3 7
4 -7
5 4
6 17
7 -14
8 -1
9 14
10 31
11 -23
12 -8
13 9
14 28
15 49
16 -34
17 -17
18 2
19 23
20 46
21 71
22 -47
23 -28
24 -7
25 16
26 41
27 68
28 97
29 -62
30 -41
31 -18
32 7
33 34
34 63
35 94
36 127
37 -79
38 -56
39 -31
40 -4
41 25
42 56
43 89
44 124
45 161
46 -98
47 -73
48 -46
49 -17
50 14
51 47
52 82
53 119
54 158
55 199
56 -119
57 -92
58 -63
59 -32
60 1
61 36
62 73
63 112
64 153
65 196
66 241
67 -142
68 -113
69 -82
70 -49
71 -14
72 23
73 62
74 103

List of values

[1, -2, 7, -7, 4, 17, -14, -1, 14, 31, -23, -8, 9, 28, 49, -34, -17, 2, 23, 46, 71, -47, -28, -7, 16, 41, 68, 97, -62, -41, -18, 7, 34, 63, 94, 127, -79, -56, -31, -4, 25, 56, 89, 124, 161, -98, -73, -46, -17, 14, 47, 82, 119, 158, 199, -119, -92, -63, -32, 1, 36, 73, 112, 153, 196, 241, -142, -113, -82, -49, -14, 23, 62, 103]