A204021 - cp's OEIS frontend

A204021 Triangle read by rows: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min(2i-1,2j-1) (A157454).

n	a(n)
0	1
1	1
2	-1
3	2
4	-4
5	1
6	4
7	-12
8	9
9	-1
10	8
11	-32
12	40
13	-16
14	1
15	16
16	-80
17	140
18	-100
19	25
20	-1
21	32
22	-192
23	432
24	-448
25	210
26	-36
27	1
28	64
29	-448
30	1232
31	-1680
32	1176
33	-392
34	49
35	-1
36	128
37	-1024
38	3328
39	-5632
40	5280
41	-2688
42	672
43	-64
44	1
45	256
46	-2304
47	8640
48	-17472
49	20592

[1, 1, -1, 2, -4, 1, 4, -12, 9, -1, 8, -32, 40, -16, 1, 16, -80, 140, -100, 25, -1, 32, -192, 432, -448, 210, -36, 1, 64, -448, 1232, -1680, 1176, -392, 49, -1, 128, -1024, 3328, -5632, 5280, -2688, 672, -64, 1, 256, -2304, 8640, -17472, 20592]

cp's OEIS Frontend

A204021 Triangle read by rows: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min(2i-1,2j-1) (A157454).

Table of values

List of values