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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.

A265282 Number of triangles in a certain geometric structure: see "Illustration of initial terms" link for precise definition.

Table of values

n a(n)
0 0
1 1
2 3
3 5
4 10
5 13
6 22
7 26
8 41
9 46
10 68
11 74
12 105
13 112
14 153
15 161
16 214
17 223
18 289
19 299
20 380
21 391
22 488
23 500
24 615
25 628
26 762
27 776
28 931
29 946
30 1123
31 1139
32 1340
33 1357
34 1583
35 1601
36 1854
37 1873
38 2154
39 2174
40 2485
41 2506
42 2848
43 2870
44 3245
45 3268
46 3677
47 3701
48 4146
49 4171
50 4653

List of values

[0, 1, 3, 5, 10, 13, 22, 26, 41, 46, 68, 74, 105, 112, 153, 161, 214, 223, 289, 299, 380, 391, 488, 500, 615, 628, 762, 776, 931, 946, 1123, 1139, 1340, 1357, 1583, 1601, 1854, 1873, 2154, 2174, 2485, 2506, 2848, 2870, 3245, 3268, 3677, 3701, 4146, 4171, 4653]

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

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