A123970 - cp's OEIS frontend

A123970 Triangle read by rows: T(0,0)=1; T(n,k) is the coefficient of x^(n-k) in the monic characteristic polynomial of the n X n matrix (min(i,j)) (i,j=1,2,...,n) (0 <= k <= n, n >= 1).

n	a(n)
0	1
1	1
2	-1
3	1
4	-3
5	1
6	1
7	-6
8	5
9	-1
10	1
11	-10
12	15
13	-7
14	1
15	1
16	-15
17	35
18	-28
19	9
20	-1
21	1
22	-21
23	70
24	-84
25	45
26	-11
27	1
28	1
29	-28
30	126
31	-210
32	165
33	-66
34	13
35	-1
36	1
37	-36
38	210
39	-462
40	495
41	-286
42	91
43	-15
44	1
45	1
46	-45
47	330
48	-924
49	1287
50	-1001
51	455
52	-120
53	17
54	-1
55	1
56	-55
57	495
58	-1716
59	3003
60	-3003
61	1820
62	-680
63	153
64	-19
65	1
66	1
67	-66
68	715
69	-3003
70	6435
71	-8008

[1, 1, -1, 1, -3, 1, 1, -6, 5, -1, 1, -10, 15, -7, 1, 1, -15, 35, -28, 9, -1, 1, -21, 70, -84, 45, -11, 1, 1, -28, 126, -210, 165, -66, 13, -1, 1, -36, 210, -462, 495, -286, 91, -15, 1, 1, -45, 330, -924, 1287, -1001, 455, -120, 17, -1, 1, -55, 495, -1716, 3003, -3003, 1820, -680, 153, -19, 1, 1, -66, 715, -3003, 6435, -8008]

cp's OEIS Frontend

A123970 Triangle read by rows: T(0,0)=1; T(n,k) is the coefficient of x^(n-k) in the monic characteristic polynomial of the n X n matrix (min(i,j)) (i,j=1,2,...,n) (0 <= k <= n, n >= 1).

Table of values

List of values