A204167 - cp's OEIS frontend

A204167 Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of ceiling((i+j)/2), as in A204166.

n	a(n)
1	1
2	-1
3	-2
4	-3
5	1
6	1
7	6
8	6
9	-1
10	0
11	-4
12	-16
13	-10
14	1
15	0
16	0
17	15
18	32
19	15
20	-1
21	0
22	0
23	0
24	-36
25	-60
26	-21
27	1
28	0
29	0
30	0
31	0
32	84
33	100
34	28
35	-1
36	0
37	0
38	0
39	0
40	0
41	-160
42	-160
43	-36
44	1
45	0
46	0
47	0
48	0
49	0
50	0
51	300
52	240
53	45
54	-1
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	-500
63	-350

[1, -1, -2, -3, 1, 1, 6, 6, -1, 0, -4, -16, -10, 1, 0, 0, 15, 32, 15, -1, 0, 0, 0, -36, -60, -21, 1, 0, 0, 0, 0, 84, 100, 28, -1, 0, 0, 0, 0, 0, -160, -160, -36, 1, 0, 0, 0, 0, 0, 0, 300, 240, 45, -1, 0, 0, 0, 0, 0, 0, 0, -500, -350]

cp's OEIS Frontend

A204167 Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of ceiling((i+j)/2), as in A204166.

Table of values

List of values