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.

A304330 T(n, k) = Sum_{j=0..k} (-1)^j*binomial(2*k, j)*(k - j)^(2*n), 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 12
6 0
7 1
8 60
9 360
10 0
11 1
12 252
13 5040
14 20160
15 0
16 1
17 1020
18 52920
19 604800
20 1814400
21 0
22 1
23 4092
24 506880
25 12640320
26 99792000
27 239500800
28 0
29 1
30 16380
31 4684680
32 230630400
33 3632428800
34 21794572800
35 43589145600
36 0
37 1
38 65532
39 42653520
40 3952428480
41 111567456000
42 1264085222400
43 6102480384000
44 10461394944000

List of values

[1, 0, 1, 0, 1, 12, 0, 1, 60, 360, 0, 1, 252, 5040, 20160, 0, 1, 1020, 52920, 604800, 1814400, 0, 1, 4092, 506880, 12640320, 99792000, 239500800, 0, 1, 16380, 4684680, 230630400, 3632428800, 21794572800, 43589145600, 0, 1, 65532, 42653520, 3952428480, 111567456000, 1264085222400, 6102480384000, 10461394944000]