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.

A118923 Triangle T(n,k) built by placing T(n,0)=A000012(n) in the left edge, T(n,n)=A079978(n) on the right edge and filling the body with the Pascal recurrence T(n,k) = T(n-1,k) + T(n-1,k-1).

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 1
5 0
6 1
7 2
8 1
9 1
10 1
11 3
12 3
13 2
14 0
15 1
16 4
17 6
18 5
19 2
20 0
21 1
22 5
23 10
24 11
25 7
26 2
27 1
28 1
29 6
30 15
31 21
32 18
33 9
34 3
35 0
36 1
37 7
38 21
39 36
40 39
41 27
42 12
43 3
44 0
45 1
46 8
47 28
48 57
49 75
50 66
51 39
52 15
53 3
54 1
55 1
56 9
57 36
58 85
59 132
60 141
61 105
62 54
63 18
64 4
65 0
66 1
67 10
68 45
69 121
70 217
71 273
72 246
73 159
74 72
75 22
76 4
77 0
78 1
79 11
80 55
81 166

List of values

[1, 1, 0, 1, 1, 0, 1, 2, 1, 1, 1, 3, 3, 2, 0, 1, 4, 6, 5, 2, 0, 1, 5, 10, 11, 7, 2, 1, 1, 6, 15, 21, 18, 9, 3, 0, 1, 7, 21, 36, 39, 27, 12, 3, 0, 1, 8, 28, 57, 75, 66, 39, 15, 3, 1, 1, 9, 36, 85, 132, 141, 105, 54, 18, 4, 0, 1, 10, 45, 121, 217, 273, 246, 159, 72, 22, 4, 0, 1, 11, 55, 166]