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.

A238707 Number T(n,k) of ballot sequences of length n having difference k between the multiplicities of the smallest and the largest value; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

Table of values

n a(n)
0 1
1 1
2 0
3 2
4 0
5 0
6 2
7 2
8 0
9 0
10 4
11 3
12 3
13 0
14 0
15 2
16 14
17 6
18 4
19 0
20 0
21 12
22 14
23 35
24 10
25 5
26 0
27 0
28 2
29 69
30 71
31 69
32 15
33 6
34 0
35 0
36 30
37 97
38 295
39 195
40 119
41 21
42 7
43 0
44 0
45 44
46 251
47 751
48 929
49 421
50 188
51 28
52 8
53 0
54 0
55 86
56 671
57 2326
58 3044
59 2254
60 791
61 279
62 36
63 9
64 0
65 0
66 2
67 1847
68 6524
69 11824
70 8999
71 4696
72 1354
73 395
74 45
75 10
76 0
77 0

List of values

[1, 1, 0, 2, 0, 0, 2, 2, 0, 0, 4, 3, 3, 0, 0, 2, 14, 6, 4, 0, 0, 12, 14, 35, 10, 5, 0, 0, 2, 69, 71, 69, 15, 6, 0, 0, 30, 97, 295, 195, 119, 21, 7, 0, 0, 44, 251, 751, 929, 421, 188, 28, 8, 0, 0, 86, 671, 2326, 3044, 2254, 791, 279, 36, 9, 0, 0, 2, 1847, 6524, 11824, 8999, 4696, 1354, 395, 45, 10, 0, 0]