A140166 - cp's OEIS frontend

A140166 Triangle read by rows, iterates of X * [1,0,0,0,...]; where X = an infinite bidiagonal matrix with [1,-2,1,-2,1,...] in the main diagonal, [1,1,1,...] in the subdiagonal and the rest zeros.

n	a(n)
1	1
2	1
3	1
4	1
5	-1
6	1
7	1
8	3
9	0
10	1
11	1
12	-5
13	3
14	-2
15	1
16	1
17	11
18	-2
19	7
20	-1
21	1
22	1
23	-21
24	9
25	-16
26	6
27	-3
28	1
29	1
30	43
31	-12
32	41
33	-10
34	12
35	-2
36	1
37	1
38	-85
39	31
40	-94
41	31
42	-34
43	10
44	-4
45	1
46	1
47	171
48	-54
49	219
50	-63
51	99
52	-24
53	18
54	-3
55	1

[1, 1, 1, 1, -1, 1, 1, 3, 0, 1, 1, -5, 3, -2, 1, 1, 11, -2, 7, -1, 1, 1, -21, 9, -16, 6, -3, 1, 1, 43, -12, 41, -10, 12, -2, 1, 1, -85, 31, -94, 31, -34, 10, -4, 1, 1, 171, -54, 219, -63, 99, -24, 18, -3, 1]

cp's OEIS Frontend

A140166 Triangle read by rows, iterates of X * [1,0,0,0,...]; where X = an infinite bidiagonal matrix with [1,-2,1,-2,1,...] in the main diagonal, [1,1,1,...] in the subdiagonal and the rest zeros.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	-1
6	1
7	1
8	3
9	0
10	1
11	1
12	-5
13	3
14	-2
15	1
16	1
17	11
18	-2
19	7
20	-1
21	1
22	1
23	-21
24	9
25	-16
26	6
27	-3
28	1
29	1
30	43
31	-12
32	41
33	-10
34	12
35	-2
36	1
37	1
38	-85
39	31
40	-94
41	31
42	-34
43	10
44	-4
45	1
46	1
47	171
48	-54
49	219
50	-63
51	99
52	-24
53	18
54	-3
55	1

n	a(n)
1	1
2	1
3	1
4	1
5	-1
6	1
7	1
8	3
9	0
10	1
11	1
12	-5
13	3
14	-2
15	1
16	1
17	11
18	-2
19	7
20	-1
21	1
22	1
23	-21
24	9
25	-16
26	6
27	-3
28	1
29	1
30	43
31	-12
32	41
33	-10
34	12
35	-2
36	1
37	1
38	-85
39	31
40	-94
41	31
42	-34
43	10
44	-4
45	1
46	1
47	171
48	-54
49	219
50	-63
51	99
52	-24
53	18
54	-3
55	1

n	a(n)
1	1
2	1
3	1
4	1
5	-1
6	1
7	1
8	3
9	0
10	1
11	1
12	-5
13	3
14	-2
15	1
16	1
17	11
18	-2
19	7
20	-1
21	1
22	1
23	-21
24	9
25	-16
26	6
27	-3
28	1
29	1
30	43
31	-12
32	41
33	-10
34	12
35	-2
36	1
37	1
38	-85
39	31
40	-94
41	31
42	-34
43	10
44	-4
45	1
46	1
47	171
48	-54
49	219
50	-63
51	99
52	-24
53	18
54	-3
55	1