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.

A338109 a(n)/A002939(n+1) is the Kirchhoff index of the join of the disjoint union of two complete graphs on n vertices with the empty graph on n+1 vertices.

Table of values

n a(n)
0 1
1 60
2 289
3 796
4 1689
5 3076
6 5065
7 7764
8 11281
9 15724
10 21201
11 27820
12 35689
13 44916
14 55609
15 67876
16 81825
17 97564
18 115201
19 134844
20 156601
21 180580
22 206889
23 235636
24 266929
25 300876
26 337585
27 377164
28 419721
29 465364
30 514201
31 566340
32 621889
33 680956
34 743649
35 810076
36 880345

List of values

[1, 60, 289, 796, 1689, 3076, 5065, 7764, 11281, 15724, 21201, 27820, 35689, 44916, 55609, 67876, 81825, 97564, 115201, 134844, 156601, 180580, 206889, 235636, 266929, 300876, 337585, 377164, 419721, 465364, 514201, 566340, 621889, 680956, 743649, 810076, 880345]