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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.

A189895 T(n,k) = Number of isosceles right triangles on a (n+1) X (k+1) grid.

Table of values

n a(n)
1 4
2 10
3 10
4 16
5 28
6 16
7 22
8 50
9 50
10 22
11 28
12 74
13 96
14 74
15 28
16 34
17 98
18 150
19 150
20 98
21 34
22 40
23 122
24 208
25 244
26 208
27 122
28 40
29 46
30 146
31 268
32 350
33 350
34 268
35 146
36 46
37 52
38 170
39 328
40 464
41 516
42 464
43 328
44 170
45 52
46 58
47 194
48 388
49 582
50 700
51 700
52 582
53 388
54 194
55 58
56 64
57 218
58 448
59 702
60 896
61 968

List of values

[4, 10, 10, 16, 28, 16, 22, 50, 50, 22, 28, 74, 96, 74, 28, 34, 98, 150, 150, 98, 34, 40, 122, 208, 244, 208, 122, 40, 46, 146, 268, 350, 350, 268, 146, 46, 52, 170, 328, 464, 516, 464, 328, 170, 52, 58, 194, 388, 582, 700, 700, 582, 388, 194, 58, 64, 218, 448, 702, 896, 968]

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

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