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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.

A072330 Common difference n such that primitive triangles exist which are n-arithmetic (i.e., primitive Heronian triangles whose sides in arithmetic progression have common difference n).

Table of values

n a(n)
1 1
2 11
3 13
4 23
5 37
6 47
7 59
8 61
9 71
10 73
11 83
12 97
13 107
14 109
15 121
16 131
17 143
18 157
19 167
20 169
21 179
22 181
23 191
24 193
25 227
26 229
27 239
28 241
29 251
30 253
31 263
32 277
33 299
34 311
35 313
36 337
37 347
38 349
39 359
40 373
41 383
42 397
43 407
44 409
45 419
46 421
47 431
48 433
49 443
50 457
51 467
52 479
53 481
54 491
55 503

List of values

[1, 11, 13, 23, 37, 47, 59, 61, 71, 73, 83, 97, 107, 109, 121, 131, 143, 157, 167, 169, 179, 181, 191, 193, 227, 229, 239, 241, 251, 253, 263, 277, 299, 311, 313, 337, 347, 349, 359, 373, 383, 397, 407, 409, 419, 421, 431, 433, 443, 457, 467, 479, 481, 491, 503]

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

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