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.

A165889 Irregular triangle T(n, k) = [x^k]( p(n, x) ), where p(n, x) = (1-x)^(2*n+4)*( Sum_{j >= 0} j^(n+1)*x^j )^2/x^2, read by rows.

Table of values

n a(n)
0 1
1 1
2 2
3 1
4 1
5 8
6 18
7 8
8 1
9 1
10 22
11 143
12 244
13 143
14 22
15 1
16 1
17 52
18 808
19 3484
20 5710
21 3484
22 808
23 52
24 1
25 1
26 114
27 3853
28 35032
29 125746
30 188908
31 125746
32 35032
33 3853
34 114
35 1
36 1
37 240
38 16782
39 290672
40 2000703
41 6040992
42 8702820
43 6040992
44 2000703
45 290672
46 16782
47 240
48 1

List of values

[1, 1, 2, 1, 1, 8, 18, 8, 1, 1, 22, 143, 244, 143, 22, 1, 1, 52, 808, 3484, 5710, 3484, 808, 52, 1, 1, 114, 3853, 35032, 125746, 188908, 125746, 35032, 3853, 114, 1, 1, 240, 16782, 290672, 2000703, 6040992, 8702820, 6040992, 2000703, 290672, 16782, 240, 1]