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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.

A350045 Numbers that are the perimeter of a primitive 120-degree integer triangle.

Table of values

n a(n)
1 15
2 28
3 40
4 66
5 77
6 91
7 104
8 126
9 144
10 153
11 170
12 187
13 190
14 209
15 220
16 228
17 260
18 276
19 286
20 299
21 322
22 325
23 345
24 350
25 390
26 400
27 420
28 435
29 442
30 464
31 476
32 493
33 496
34 522
35 527
36 544
37 551
38 558
39 589
40 608
41 620
42 630
43 646
44 665
45 672
46 703
47 714
48 740
49 770
50 777
51 798
52 805
53 814
54 840
55 851
56 861
57 874
58 888
59 902
60 920
61 943
62 946
63 950

List of values

[15, 28, 40, 66, 77, 91, 104, 126, 144, 153, 170, 187, 190, 209, 220, 228, 260, 276, 286, 299, 322, 325, 345, 350, 390, 400, 420, 435, 442, 464, 476, 493, 496, 522, 527, 544, 551, 558, 589, 608, 620, 630, 646, 665, 672, 703, 714, 740, 770, 777, 798, 805, 814, 840, 851, 861, 874, 888, 902, 920, 943, 946, 950]

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

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