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.

A331969 T(n, k) = [x^(n-k)] 1/(((1 - 2*x)^k)*(1 - x)^(k + 1)). Triangle read by rows, for 0 <= k <= n.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 4
5 1
6 1
7 11
8 7
9 1
10 1
11 26
12 30
13 10
14 1
15 1
16 57
17 102
18 58
19 13
20 1
21 1
22 120
23 303
24 256
25 95
26 16
27 1
28 1
29 247
30 825
31 955
32 515
33 141
34 19
35 1
36 1
37 502
38 2116
39 3178
40 2310
41 906
42 196
43 22
44 1
45 1
46 1013
47 5200
48 9740
49 9078
50 4746
51 1456
52 260
53 25
54 1

List of values

[1, 1, 1, 1, 4, 1, 1, 11, 7, 1, 1, 26, 30, 10, 1, 1, 57, 102, 58, 13, 1, 1, 120, 303, 256, 95, 16, 1, 1, 247, 825, 955, 515, 141, 19, 1, 1, 502, 2116, 3178, 2310, 906, 196, 22, 1, 1, 1013, 5200, 9740, 9078, 4746, 1456, 260, 25, 1]