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.

A144400 Triangle read by rows: row n (n > 0) gives the coefficients of x^k (0 <= k <= n - 1) in the expansion of Sum_{j=0..n} A000931(j+4)*binomial(n, j)*x^(j - 1)*(1 - x)^(n - j).

Table of values

n a(n)
1 1
2 2
3 -1
4 3
5 -3
6 1
7 4
8 -6
9 4
10 0
11 5
12 -10
13 10
14 0
15 -3
16 6
17 -15
18 20
19 0
20 -18
21 10
22 7
23 -21
24 35
25 0
26 -63
27 70
28 -24
29 8
30 -28
31 56
32 0
33 -168
34 280
35 -192
36 49
37 9
38 -36
39 84
40 0
41 -378
42 840
43 -864
44 441
45 -89
46 10
47 -45
48 120
49 0
50 -756
51 2100
52 -2880
53 2205
54 -890
55 145
56 11
57 -55
58 165
59 0

List of values

[1, 2, -1, 3, -3, 1, 4, -6, 4, 0, 5, -10, 10, 0, -3, 6, -15, 20, 0, -18, 10, 7, -21, 35, 0, -63, 70, -24, 8, -28, 56, 0, -168, 280, -192, 49, 9, -36, 84, 0, -378, 840, -864, 441, -89, 10, -45, 120, 0, -756, 2100, -2880, 2205, -890, 145, 11, -55, 165, 0]