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.

A173591 T(n, k) = k^n*U(n, (1/k - k)/2) + (n + 1)^(k - 1)*U(k - 1, (1/(n + 1) - n - 1)/2), where U(n,x) is the n-th Chebyshev polynomial of the second kind, square array read by antidiagonals (n >= 0, k >= 1).

Table of values

n a(n)
0 2
1 1
2 1
3 0
4 -6
5 0
6 1
7 -3
8 -3
9 1
10 2
11 -18
12 110
13 -18
14 2
15 1
16 -35
17 -159
18 -159
19 -35
20 1
21 0
22 10
23 3000
24 -5790
25 3000
26 10
27 0
28 1
29 -139
30 -15091
31 27457
32 27457
33 -15091
34 -139
35 1
36 2
37 30
38 110454
39 -595250
40 578402
41 -595250
42 110454
43 30
44 2
45 1
46 5
47 -715167
48 7576241
49 -5255603
50 7576241
51 -715167
52 5
53 1

List of values

[2, 1, 1, 0, -6, 0, 1, -3, -3, 1, 2, -18, 110, -18, 2, 1, -35, -159, -159, -35, 1, 0, 10, 3000, -5790, 3000, 10, 0, 1, -139, -15091, 27457, 27457, -15091, -139, 1, 2, 30, 110454, -595250, 578402, -595250, 110454, 30, 2, 1, 5, -715167, 7576241, -5255603, 7576241, -715167, 5, 1]