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.

A188266 Coefficient of x^n in the series 1/F(-1/2,1/2;1;16x), where F(a1,a2;b;x) is the hypergeometric series.

Table of values

n a(n)
0 1
1 4
2 28
3 240
4 2316
5 24240
6 269392
7 3135808
8 37869676
9 471189680
10 6008850512
11 78221787968
12 1036166807056
13 13931585235520
14 189737945839552
15 2613162137898752
16 36344513366001452
17 509885938301354672
18 7208577711881000912

List of values

[1, 4, 28, 240, 2316, 24240, 269392, 3135808, 37869676, 471189680, 6008850512, 78221787968, 1036166807056, 13931585235520, 189737945839552, 2613162137898752, 36344513366001452, 509885938301354672, 7208577711881000912]