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.

A004175 Triangle of coefficients of Euler polynomials 2^n*E_n(x) (exponents in decreasing order).

Table of values

n a(n)
0 1
1 2
2 -1
3 4
4 -4
5 0
6 8
7 -12
8 0
9 2
10 16
11 -32
12 0
13 16
14 0
15 32
16 -80
17 0
18 80
19 0
20 -16
21 64
22 -192
23 0
24 320
25 0
26 -192
27 0
28 128
29 -448
30 0
31 1120
32 0
33 -1344
34 0
35 272
36 256
37 -1024
38 0
39 3584
40 0
41 -7168
42 0
43 4352
44 0
45 512
46 -2304
47 0
48 10752
49 0
50 -32256
51 0
52 39168
53 0
54 -7936
55 1024

List of values

[1, 2, -1, 4, -4, 0, 8, -12, 0, 2, 16, -32, 0, 16, 0, 32, -80, 0, 80, 0, -16, 64, -192, 0, 320, 0, -192, 0, 128, -448, 0, 1120, 0, -1344, 0, 272, 256, -1024, 0, 3584, 0, -7168, 0, 4352, 0, 512, -2304, 0, 10752, 0, -32256, 0, 39168, 0, -7936, 1024]