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.

A304334 T(n, k) = Sum_{j=0..k} (-1)^j*binomial(2*k, j)*(k - j)^(2*n)/k!, triangle read by rows, n >= 0 and 0 <= k <= n.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 6
6 0
7 1
8 30
9 60
10 0
11 1
12 126
13 840
14 840
15 0
16 1
17 510
18 8820
19 25200
20 15120
21 0
22 1
23 2046
24 84480
25 526680
26 831600
27 332640
28 0
29 1
30 8190
31 780780
32 9609600
33 30270240
34 30270240
35 8648640
36 0
37 1
38 32766
39 7108920
40 164684520
41 929728800
42 1755673920
43 1210809600
44 259459200

List of values

[1, 0, 1, 0, 1, 6, 0, 1, 30, 60, 0, 1, 126, 840, 840, 0, 1, 510, 8820, 25200, 15120, 0, 1, 2046, 84480, 526680, 831600, 332640, 0, 1, 8190, 780780, 9609600, 30270240, 30270240, 8648640, 0, 1, 32766, 7108920, 164684520, 929728800, 1755673920, 1210809600, 259459200]