cp's OEIS Frontend

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.

A173865 Alternating triangle read by rows: numbers k such that k=6*m+-1=r*j, r>=j and n>=q where r=6*n-1 or r=6*n+1 and j=6*q-1 or j=6*q+1.

Table of values

n a(n)
1 1
2 5
3 35
4 7
5 25
6 49
7 11
8 65
9 77
10 143
11 13
12 55
13 91
14 121
15 169
16 17
17 95
18 119
19 209
20 221
21 323
22 19
23 65
24 133
25 187
26 247
27 289
28 361
29 23
30 125
31 161
32 275
33 299
34 425
35 437
36 575
37 25
38 115
39 175
40 253
41 325
42 391
43 475
44 529
45 625
46 29
47 155
48 203
49 341
50 377
51 527
52 589
53 713
54 725
55 899
56 31
57 145
58 217

List of values

[1, 5, 35, 7, 25, 49, 11, 65, 77, 143, 13, 55, 91, 121, 169, 17, 95, 119, 209, 221, 323, 19, 65, 133, 187, 247, 289, 361, 23, 125, 161, 275, 299, 425, 437, 575, 25, 115, 175, 253, 325, 391, 475, 529, 625, 29, 155, 203, 341, 377, 527, 589, 713, 725, 899, 31, 145, 217]