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.

A281385 Triangular array T(n, k) = n^2 + n*k - k^2.

Table of values

n a(n)
0 0
1 1
2 1
3 4
4 5
5 4
6 9
7 11
8 11
9 9
10 16
11 19
12 20
13 19
14 16
15 25
16 29
17 31
18 31
19 29
20 25
21 36
22 41
23 44
24 45
25 44
26 41
27 36
28 49
29 55
30 59
31 61
32 61
33 59
34 55
35 49
36 64
37 71
38 76
39 79
40 80
41 79
42 76
43 71
44 64
45 81
46 89
47 95
48 99
49 101
50 101
51 99
52 95
53 89
54 81
55 100
56 109
57 116
58 121
59 124
60 125
61 124
62 121
63 116
64 109
65 100

List of values

[0, 1, 1, 4, 5, 4, 9, 11, 11, 9, 16, 19, 20, 19, 16, 25, 29, 31, 31, 29, 25, 36, 41, 44, 45, 44, 41, 36, 49, 55, 59, 61, 61, 59, 55, 49, 64, 71, 76, 79, 80, 79, 76, 71, 64, 81, 89, 95, 99, 101, 101, 99, 95, 89, 81, 100, 109, 116, 121, 124, 125, 124, 121, 116, 109, 100]

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

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