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.

A326479 T(n, k) = 2^n * n! * [x^k] [z^n] (exp(z) + 1)^2/(4*exp(x*z)), triangle read by rows, for 0 <= k <= n.

Table of values

n a(n)
0 1
1 2
2 -2
3 6
4 -8
5 4
6 20
7 -36
8 24
9 -8
10 72
11 -160
12 144
13 -64
14 16
15 272
16 -720
17 800
18 -480
19 160
20 -32
21 1056
22 -3264
23 4320
24 -3200
25 1440
26 -384
27 64
28 4160
29 -14784
30 22848
31 -20160
32 11200
33 -4032
34 896
35 -128
36 16512
37 -66560
38 118272
39 -121856
40 80640
41 -35840
42 10752
43 -2048
44 256

List of values

[1, 2, -2, 6, -8, 4, 20, -36, 24, -8, 72, -160, 144, -64, 16, 272, -720, 800, -480, 160, -32, 1056, -3264, 4320, -3200, 1440, -384, 64, 4160, -14784, 22848, -20160, 11200, -4032, 896, -128, 16512, -66560, 118272, -121856, 80640, -35840, 10752, -2048, 256]