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.

A328812 Constant term in the expansion of (Product_{k=1..n} (1 + x_k) + Product_{k=1..n} (1 + 1/x_k))^n.

Table of values

n a(n)
0 1
1 2
2 10
3 164
4 9826
5 2031252
6 1622278624
7 4579408029576
8 51207103076632066
9 2052124795850957537060
10 330463219813679264204224300
11 192454957455454582636391397662856
12 454577215426865313388106323928590128736
13 3907905904547764847197154889183844343802986600

List of values

[1, 2, 10, 164, 9826, 2031252, 1622278624, 4579408029576, 51207103076632066, 2052124795850957537060, 330463219813679264204224300, 192454957455454582636391397662856, 454577215426865313388106323928590128736, 3907905904547764847197154889183844343802986600]