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.

A212084 Triangle T(n,k), n>=0, 0<=k<=2n, read by rows: row n gives the coefficients of the chromatic polynomial of the complete bipartite graph K_(n,n), highest powers first.

Table of values

n a(n)
0 1
1 1
2 -1
3 0
4 1
5 -4
6 6
7 -3
8 0
9 1
10 -9
11 36
12 -75
13 78
14 -31
15 0
16 1
17 -16
18 120
19 -524
20 1400
21 -2236
22 1930
23 -675
24 0
25 1
26 -25
27 300
28 -2200
29 10650
30 -34730
31 75170
32 -102545
33 78610
34 -25231
35 0
36 1
37 -36
38 630
39 -6915
40 52080
41 -279142
42 1074822
43 -2942445
44 5552680
45 -6796926
46 4787174

List of values

[1, 1, -1, 0, 1, -4, 6, -3, 0, 1, -9, 36, -75, 78, -31, 0, 1, -16, 120, -524, 1400, -2236, 1930, -675, 0, 1, -25, 300, -2200, 10650, -34730, 75170, -102545, 78610, -25231, 0, 1, -36, 630, -6915, 52080, -279142, 1074822, -2942445, 5552680, -6796926, 4787174]