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.

A167172 Triangle T(n,k) read by rows: T(n,k) = binomial(n, k) + A140356(n, k) - 1.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 1
7 3
8 3
9 1
10 1
11 4
12 7
13 4
14 1
15 1
16 5
17 11
18 11
19 5
20 1
21 1
22 6
23 16
24 25
25 16
26 6
27 1
28 1
29 7
30 22
31 40
32 40
33 22
34 7
35 1
36 1
37 8
38 29
39 61
40 93
41 61
42 29
43 8
44 1
45 1
46 9
47 37
48 89
49 149
50 149
51 89
52 37
53 9
54 1
55 1
56 10
57 46
58 125
59 233
60 371
61 233
62 125
63 46
64 10
65 1

List of values

[1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 4, 7, 4, 1, 1, 5, 11, 11, 5, 1, 1, 6, 16, 25, 16, 6, 1, 1, 7, 22, 40, 40, 22, 7, 1, 1, 8, 29, 61, 93, 61, 29, 8, 1, 1, 9, 37, 89, 149, 149, 89, 37, 9, 1, 1, 10, 46, 125, 233, 371, 233, 125, 46, 10, 1]