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.

A292228 Denominators of partial sums of the series 1 + 2*Sum_{k >= 1} 1/(4*k^4 + 1).

Table of values

n a(n)
0 1
1 5
2 65
3 325
4 13325
5 812825
6 13818025
7 1561436825
8 45281667925
9 8195981894425
10 482116582025
11 434387040404525
12 135963143646616325
13 9925309486202991725
14 4178555293691459516225
15 154606545866584002100325
16 16852113499457656228935425
17 10330345575167543268337415525
18 1415257343797953427762225926925
19 1077010838630242558527053930389925

List of values

[1, 5, 65, 325, 13325, 812825, 13818025, 1561436825, 45281667925, 8195981894425, 482116582025, 434387040404525, 135963143646616325, 9925309486202991725, 4178555293691459516225, 154606545866584002100325, 16852113499457656228935425, 10330345575167543268337415525, 1415257343797953427762225926925, 1077010838630242558527053930389925]