A204163 - cp's OEIS frontend

A204163 Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of (floor[(i+1)/2] if i=j and = 0 otherwise), as in A204162.

n	a(n)
1	1
2	-1
3	0
4	-2
5	1
6	0
7	-2
8	4
9	-1
10	0
11	-2
12	7
13	-6
14	1
15	0
16	-4
17	17
18	-21
19	9
20	-1
21	0
22	-8
23	40
24	-64
25	43
26	-12
27	1
28	0
29	-24
30	132
31	-244
32	206
33	-85
34	16
35	-1
36	0
37	-72
38	432
39	-904
40	913
41	-492
42	142
43	-20
44	1
45	0
46	-288
47	1836
48	-4180
49	4749
50	-3025
51	1118
52	-234
53	25
54	-1
55	0

[1, -1, 0, -2, 1, 0, -2, 4, -1, 0, -2, 7, -6, 1, 0, -4, 17, -21, 9, -1, 0, -8, 40, -64, 43, -12, 1, 0, -24, 132, -244, 206, -85, 16, -1, 0, -72, 432, -904, 913, -492, 142, -20, 1, 0, -288, 1836, -4180, 4749, -3025, 1118, -234, 25, -1, 0]

cp's OEIS Frontend

A204163 Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of (floor[(i+1)/2] if i=j and = 0 otherwise), as in A204162.

Table of values

List of values