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.

A218559 Sum_{i=0..n-1} i*(n^(i+1)-1)/(n-1)*n^(i(i+1)/2).

Table of values

n a(n)
1 0
2 6
3 714
4 1047188
5 30515132780
6 21936856591278330
7 459986443452971306412268
8 324518550895166392891543292552264
9 8727963565271662417355532872177263437534624
10 9999999999888888888777777776666666555555444443333222110

List of values

[0, 6, 714, 1047188, 30515132780, 21936856591278330, 459986443452971306412268, 324518550895166392891543292552264, 8727963565271662417355532872177263437534624, 9999999999888888888777777776666666555555444443333222110]