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.

A119030 Difference between numerator and denominator of the sum of all matrix elements of n X n Hilbert matrix M(i,j)=1/(i+j-1) (i,j = 1..n), A117731[n] - A117664[n].

Table of values

n a(n)
1 0
2 4
3 27
4 428
5 1375
6 15797
7 211631
8 86540
9 1496205
10 144045379
11 145607407
12 3378951221
13 17021747431
14 51392118293
15 214084856611
16 13337033800292
17 13393340889767
18 94103945740529
19 3493457389196573
20 3503912518228613

List of values

[0, 4, 27, 428, 1375, 15797, 211631, 86540, 1496205, 144045379, 145607407, 3378951221, 17021747431, 51392118293, 214084856611, 13337033800292, 13393340889767, 94103945740529, 3493457389196573, 3503912518228613]