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.

A131299 Triangle T(n,k) = 3*binomial(n-floor((k+1)/2), floor(k/2))-2 with k=0..n, read by rows.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 4
9 1
10 1
11 1
12 7
13 4
14 1
15 1
16 1
17 10
18 7
19 7
20 1
21 1
22 1
23 13
24 10
25 16
26 7
27 1
28 1
29 1
30 16
31 13
32 28
33 16
34 10
35 1
36 1
37 1
38 19
39 16
40 43
41 28
42 28
43 10
44 1
45 1
46 1
47 22
48 19
49 61
50 43
51 58
52 28
53 13
54 1
55 1
56 1
57 25
58 22
59 82
60 61
61 103
62 58
63 43
64 13
65 1
66 1
67 1
68 28
69 25
70 106
71 82
72 166

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 4, 1, 1, 1, 7, 4, 1, 1, 1, 10, 7, 7, 1, 1, 1, 13, 10, 16, 7, 1, 1, 1, 16, 13, 28, 16, 10, 1, 1, 1, 19, 16, 43, 28, 28, 10, 1, 1, 1, 22, 19, 61, 43, 58, 28, 13, 1, 1, 1, 25, 22, 82, 61, 103, 58, 43, 13, 1, 1, 1, 28, 25, 106, 82, 166]

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

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