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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.

A306673 a(n) is the number of distinct, non-similar acute triangles with integer sides and largest side <= n.

Table of values

n a(n)
1 1
2 2
3 4
4 7
5 12
6 16
7 26
8 34
9 46
10 56
11 76
12 90
13 116
14 135
15 161
16 187
17 229
18 257
19 308
20 344
21 394
22 439
23 511
24 558
25 636
26 698
27 779
28 849
29 959
30 1027
31 1152
32 1245
33 1362
34 1465
35 1603
36 1703
37 1874
38 2004
39 2164
40 2298
41 2507
42 2639
43 2867
44 3034
45 3235
46 3421
47 3690
48 3866
49 4147
50 4354

List of values

[1, 2, 4, 7, 12, 16, 26, 34, 46, 56, 76, 90, 116, 135, 161, 187, 229, 257, 308, 344, 394, 439, 511, 558, 636, 698, 779, 849, 959, 1027, 1152, 1245, 1362, 1465, 1603, 1703, 1874, 2004, 2164, 2298, 2507, 2639, 2867, 3034, 3235, 3421, 3690, 3866, 4147, 4354]

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

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