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.

A337890 Array read by descending antidiagonals: T(n,k) is the number of achiral colorings of the square faces of a regular n-dimensional orthotope (hypercube) using k or fewer colors.

Table of values

n a(n)
2 1
3 2
4 1
5 3
6 10
7 1
8 4
9 55
10 8200
11 1
12 5
13 200
14 9080559
15 199556208371776
16 1
17 6
18 560
19 1503323520
20 1370366433970979158839987
21 388032967149969852957120195660938882809069568
22 1

List of values

[1, 2, 1, 3, 10, 1, 4, 55, 8200, 1, 5, 200, 9080559, 199556208371776, 1, 6, 560, 1503323520, 1370366433970979158839987, 388032967149969852957120195660938882809069568, 1]