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.

A002700 Coefficients of Chebyshev polynomials: n*(2*n+1) * 4^(n-1).

Table of values

n a(n)
1 3
2 40
3 336
4 2304
5 14080
6 79872
7 430080
8 2228224
9 11206656
10 55050240
11 265289728
12 1258291200
13 5888802816
14 27246198784
15 124822487040
16 566935683072
17 2555505541120
18 11441792876544
19 50921132261376
20 225399883694080
21 992858999881728
22 4354066045992960

List of values

[3, 40, 336, 2304, 14080, 79872, 430080, 2228224, 11206656, 55050240, 265289728, 1258291200, 5888802816, 27246198784, 124822487040, 566935683072, 2555505541120, 11441792876544, 50921132261376, 225399883694080, 992858999881728, 4354066045992960]