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.

A330266 Number of ways to shuffle a deck of 4n cards, with 4 cards in each of n ranks, so that adjacent cards have different ranks.

Table of values

n a(n)
0 1
1 0
2 1152
3 15095808
4 751480602624
5 93995798935633920
6 25111340235557122867200
7 12742555660097789273088983040
8 11259023892340311657074592904642560
9 16205462460428776872054787528078739374080
10 36051066700209244649349258741114804984663244800
11 118807003903158552156678227915553602167323425243136000

List of values

[1, 0, 1152, 15095808, 751480602624, 93995798935633920, 25111340235557122867200, 12742555660097789273088983040, 11259023892340311657074592904642560, 16205462460428776872054787528078739374080, 36051066700209244649349258741114804984663244800, 118807003903158552156678227915553602167323425243136000]