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.

A130671 Triangular sequence based on Pascal's triangle: t(n,m) = 2*binomial(m, n) - (1 + n*(m - n)).

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 2
6 1
7 1
8 3
9 3
10 1
11 1
12 4
13 7
14 4
15 1
16 1
17 5
18 13
19 13
20 5
21 1
22 1
23 6
24 21
25 30
26 21
27 6
28 1
29 1
30 7
31 31
32 57
33 57
34 31
35 7
36 1
37 1
38 8
39 43
40 96
41 123
42 96
43 43
44 8
45 1
46 1
47 9
48 57
49 149
50 231
51 231
52 149
53 57
54 9
55 1
56 1
57 10
58 73
59 218
60 395
61 478
62 395
63 218
64 73
65 10
66 1

List of values

[1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 4, 7, 4, 1, 1, 5, 13, 13, 5, 1, 1, 6, 21, 30, 21, 6, 1, 1, 7, 31, 57, 57, 31, 7, 1, 1, 8, 43, 96, 123, 96, 43, 8, 1, 1, 9, 57, 149, 231, 231, 149, 57, 9, 1, 1, 10, 73, 218, 395, 478, 395, 218, 73, 10, 1]