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.

A204156 Symmetric matrix based on f(i,j)=max(3i-j, 3j-i), by antidiagonals.

Table of values

n a(n)
1 1
2 4
3 4
4 7
5 3
6 7
7 10
8 6
9 6
10 10
11 13
12 9
13 5
14 9
15 13
16 16
17 12
18 8
19 8
20 12
21 16
22 19
23 15
24 11
25 7
26 11
27 15
28 19
29 22
30 18
31 14
32 10
33 10
34 14
35 18
36 22
37 25
38 21
39 17
40 13
41 9
42 13
43 17
44 21
45 25
46 28
47 24
48 20
49 16
50 12
51 12
52 16
53 20
54 24
55 28
56 31
57 27
58 23
59 19
60 15
61 11
62 15
63 19
64 23
65 27
66 31
67 34
68 30
69 26
70 22
71 18

List of values

[1, 4, 4, 7, 3, 7, 10, 6, 6, 10, 13, 9, 5, 9, 13, 16, 12, 8, 8, 12, 16, 19, 15, 11, 7, 11, 15, 19, 22, 18, 14, 10, 10, 14, 18, 22, 25, 21, 17, 13, 9, 13, 17, 21, 25, 28, 24, 20, 16, 12, 12, 16, 20, 24, 28, 31, 27, 23, 19, 15, 11, 15, 19, 23, 27, 31, 34, 30, 26, 22, 18]

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

Content is available under The OEIS End-User License Agreement.