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.

A328875 Constant term in the expansion of (-1 + (1 + w + 1/w) * (1 + x + 1/x) * (1 + y + 1/y) * (1 + z + 1/z))^n.

Table of values

n a(n)
0 1
1 0
2 80
3 2160
4 121200
5 6136800
6 356570960
7 21225304800
8 1321586558320
9 84398804078400
10 5518934916677280
11 367489108030524480
12 24852668879410144080
13 1702677155195779963200
14 117960677109321028039200
15 8251450286371615261498560
16 582087494621171173360817520

List of values

[1, 0, 80, 2160, 121200, 6136800, 356570960, 21225304800, 1321586558320, 84398804078400, 5518934916677280, 367489108030524480, 24852668879410144080, 1702677155195779963200, 117960677109321028039200, 8251450286371615261498560, 582087494621171173360817520]