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.

A204130 Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of f(i,j)=(L(i) if i=j and 1 otherwise) (A204129).

Table of values

n a(n)
1 1
2 -1
3 2
4 -4
5 1
6 6
7 -16
8 8
9 -1
10 36
11 -108
12 69
13 -15
14 1
15 360
16 -1152
17 834
18 -230
19 26
20 -1
21 6120
22 -20304
23 15726
24 -4890
25 693
26 -44
27 1
28 171360
29 -580752
30 467724
31 -155524
32 24797
33 -1963
34 73
35 -1
36 7882560
37 -27057312
38 22300752
39 -7709504

List of values

[1, -1, 2, -4, 1, 6, -16, 8, -1, 36, -108, 69, -15, 1, 360, -1152, 834, -230, 26, -1, 6120, -20304, 15726, -4890, 693, -44, 1, 171360, -580752, 467724, -155524, 24797, -1963, 73, -1, 7882560, -27057312, 22300752, -7709504]