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.

A274490 Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n starting with k columns of length 1 (n>=2, k>=0).

Table of values

n a(n)
2 0
3 1
4 1
5 0
6 1
7 3
8 1
9 0
10 1
11 8
12 3
13 1
14 0
15 1
16 22
17 8
18 3
19 1
20 0
21 1
22 62
23 22
24 8
25 3
26 1
27 0
28 1
29 178
30 62
31 22
32 8
33 3
34 1
35 0
36 1
37 519
38 178
39 62
40 22
41 8
42 3
43 1
44 0
45 1
46 1533
47 519
48 178
49 62
50 22
51 8
52 3
53 1
54 0
55 1
56 4578
57 1533
58 519
59 178
60 62
61 22
62 8
63 3
64 1
65 0
66 1
67 13800
68 4578
69 1533
70 519
71 178
72 62
73 22
74 8
75 3
76 1
77 0
78 1

List of values

[0, 1, 1, 0, 1, 3, 1, 0, 1, 8, 3, 1, 0, 1, 22, 8, 3, 1, 0, 1, 62, 22, 8, 3, 1, 0, 1, 178, 62, 22, 8, 3, 1, 0, 1, 519, 178, 62, 22, 8, 3, 1, 0, 1, 1533, 519, 178, 62, 22, 8, 3, 1, 0, 1, 4578, 1533, 519, 178, 62, 22, 8, 3, 1, 0, 1, 13800, 4578, 1533, 519, 178, 62, 22, 8, 3, 1, 0, 1]