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.

A370336 Expansion of [ Sum_{n>=0} 5^n * (2*4^n + 1)/3 * x^(n*(n+1)/2) ]^(1/3).

Table of values

n a(n)
0 1
1 5
2 -25
3 300
4 -3000
5 34375
6 -426750
7 5539375
8 -73968750
9 1010175000
10 -14043011250
11 198006675000
12 -2824523453125
13 40684553625000
14 -590871274218750
15 8642318714253125
16 -127185323309250000
17 1881843237600000000
18 -27976771190059687500
19 417688301999460937500
20 -6259735680122821875000

List of values

[1, 5, -25, 300, -3000, 34375, -426750, 5539375, -73968750, 1010175000, -14043011250, 198006675000, -2824523453125, 40684553625000, -590871274218750, 8642318714253125, -127185323309250000, 1881843237600000000, -27976771190059687500, 417688301999460937500, -6259735680122821875000]