A123973 - cp's OEIS frontend

A123973 Sequence of tridiagonal matrices with one center zero terminal that give a triangular sequence from the characteristic polynomials based on the 3 X 3 matrix type: {{1, -1, 0}, {-1, 1, -1}, {0, -1, 0}}.

n	a(n)
1	0
2	0
3	-1
4	-1
5	-1
6	1
7	-1
8	1
9	2
10	-1
11	0
12	3
13	0
14	-3
15	1
16	1
17	2
18	-5
19	-2
20	4
21	-1
22	1
23	-2
24	-7
25	6
26	5
27	-5
28	1
29	0
30	-5
31	0
32	15
33	-5
34	-9
35	6
36	-1
37	-1
38	-3
39	12
40	9
41	-25
42	1
43	14
44	-7
45	1
46	-1
47	3
48	15
49	-18
50	-29
51	35
52	7
53	-20
54	8
55	-1
56	0
57	7
58	0
59	-42
60	14
61	63
62	-42
63	-20
64	27
65	-9
66	1

[0, 0, -1, -1, -1, 1, -1, 1, 2, -1, 0, 3, 0, -3, 1, 1, 2, -5, -2, 4, -1, 1, -2, -7, 6, 5, -5, 1, 0, -5, 0, 15, -5, -9, 6, -1, -1, -3, 12, 9, -25, 1, 14, -7, 1, -1, 3, 15, -18, -29, 35, 7, -20, 8, -1, 0, 7, 0, -42, 14, 63, -42, -20, 27, -9, 1]

cp's OEIS Frontend

A123973 Sequence of tridiagonal matrices with one center zero terminal that give a triangular sequence from the characteristic polynomials based on the 3 X 3 matrix type: {{1, -1, 0}, {-1, 1, -1}, {0, -1, 0}}.

Table of values

List of values

n	a(n)
1	0
2	0
3	-1
4	-1
5	-1
6	1
7	-1
8	1
9	2
10	-1
11	0
12	3
13	0
14	-3
15	1
16	1
17	2
18	-5
19	-2
20	4
21	-1
22	1
23	-2
24	-7
25	6
26	5
27	-5
28	1
29	0
30	-5
31	0
32	15
33	-5
34	-9
35	6
36	-1
37	-1
38	-3
39	12
40	9
41	-25
42	1
43	14
44	-7
45	1
46	-1
47	3
48	15
49	-18
50	-29
51	35
52	7
53	-20
54	8
55	-1
56	0
57	7
58	0
59	-42
60	14
61	63
62	-42
63	-20
64	27
65	-9
66	1

n	a(n)
1	0
2	0
3	-1
4	-1
5	-1
6	1
7	-1
8	1
9	2
10	-1
11	0
12	3
13	0
14	-3
15	1
16	1
17	2
18	-5
19	-2
20	4
21	-1
22	1
23	-2
24	-7
25	6
26	5
27	-5
28	1
29	0
30	-5
31	0
32	15
33	-5
34	-9
35	6
36	-1
37	-1
38	-3
39	12
40	9
41	-25
42	1
43	14
44	-7
45	1
46	-1
47	3
48	15
49	-18
50	-29
51	35
52	7
53	-20
54	8
55	-1
56	0
57	7
58	0
59	-42
60	14
61	63
62	-42
63	-20
64	27
65	-9
66	1

n	a(n)
1	0
2	0
3	-1
4	-1
5	-1
6	1
7	-1
8	1
9	2
10	-1
11	0
12	3
13	0
14	-3
15	1
16	1
17	2
18	-5
19	-2
20	4
21	-1
22	1
23	-2
24	-7
25	6
26	5
27	-5
28	1
29	0
30	-5
31	0
32	15
33	-5
34	-9
35	6
36	-1
37	-1
38	-3
39	12
40	9
41	-25
42	1
43	14
44	-7
45	1
46	-1
47	3
48	15
49	-18
50	-29
51	35
52	7
53	-20
54	8
55	-1
56	0
57	7
58	0
59	-42
60	14
61	63
62	-42
63	-20
64	27
65	-9
66	1