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.

A123027 Triangle of coefficients of (1 - x)^n*U(n,-(3*x - 2)/(2*x - 2)), where U(n,x) is the n-th Chebyshev polynomial of the second kind.

Table of values

n a(n)
0 1
1 -2
2 3
3 3
4 -10
5 8
6 -4
7 22
8 -38
9 21
10 5
11 -40
12 111
13 -130
14 55
15 -6
16 65
17 -256
18 474
19 -420
20 144
21 7
22 -98
23 511
24 -1324
25 1836
26 -1308
27 377
28 -8
29 140
30 -924
31 3130
32 -6020
33 6666
34 -3970
35 987
36 9
37 -192
38 1554
39 -6588
40 16435
41 -25088
42 23109
43 -11822
44 2584
45 -10
46 255
47 -2472
48 12720
49 -39430
50 77645
51 -98160
52 77378
53 -34690
54 6765

List of values

[1, -2, 3, 3, -10, 8, -4, 22, -38, 21, 5, -40, 111, -130, 55, -6, 65, -256, 474, -420, 144, 7, -98, 511, -1324, 1836, -1308, 377, -8, 140, -924, 3130, -6020, 6666, -3970, 987, 9, -192, 1554, -6588, 16435, -25088, 23109, -11822, 2584, -10, 255, -2472, 12720, -39430, 77645, -98160, 77378, -34690, 6765]