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.

A173218 G.f.: A(x) = Sum_{n>=0} (1 + x)^(n^2+n) / 2^(n+1).

Table of values

n a(n)
0 1
1 4
2 50
3 1040
4 30300
5 1135080
6 51972668
7 2812429632
8 175606496520
9 12426817517920
10 982846762742416
11 85916923493646752
12 8225856593959648696
13 856044724445883011520
14 96213518828394481754400

List of values

[1, 4, 50, 1040, 30300, 1135080, 51972668, 2812429632, 175606496520, 12426817517920, 982846762742416, 85916923493646752, 8225856593959648696, 856044724445883011520, 96213518828394481754400]