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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.

A308157 Sum of the perimeters of all integer-sided obtuse triangles with perimeter n.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 7
8 0
9 9
10 0
11 22
12 0
13 26
14 28
15 45
16 32
17 51
18 54
19 95
20 60
21 147
22 88
23 184
24 120
25 225
26 182
27 270
28 224
29 319
30 270
31 434
32 352
33 528
34 408
35 630
36 504
37 703
38 646
39 819
40 720
41 943
42 882
43 1161
44 968
45 1350
46 1104
47 1504
48 1296
49 1666
50 1500
51 1887
52 1716
53 2120
54 1890
55 2420

List of values

[0, 0, 0, 0, 0, 0, 7, 0, 9, 0, 22, 0, 26, 28, 45, 32, 51, 54, 95, 60, 147, 88, 184, 120, 225, 182, 270, 224, 319, 270, 434, 352, 528, 408, 630, 504, 703, 646, 819, 720, 943, 882, 1161, 968, 1350, 1104, 1504, 1296, 1666, 1500, 1887, 1716, 2120, 1890, 2420]

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

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