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.

A143156 Triangle read by rows, T(n,k) = Sum_{j=k..n} A001511(j); = A000012 * (A001511 * 0^(n-k)) * A000012; 1<=k<=n.

Table of values

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

List of values

[1, 3, 2, 4, 3, 1, 7, 6, 4, 3, 8, 7, 5, 4, 1, 10, 9, 7, 6, 3, 2, 11, 10, 8, 7, 4, 3, 1, 15, 14, 12, 11, 8, 7, 5, 4, 16, 15, 13, 12, 9, 8, 6, 5, 1, 18, 17, 15, 14, 11, 10, 8, 7, 3, 2, 19, 18, 16, 15, 12, 11, 9, 8, 4, 3, 1, 22, 21, 19, 18, 15, 14, 12, 11, 7, 6, 4, 3]