A173266 - cp's OEIS frontend

A173266 T(0,k) = 1 and T(n,k) = [x^k] (x^(n + 1) - 1)/((x - 2)*x^n + 1) for n >= 1, square array read by descending antidiagonals (n >= 0, k >= 0).

n	a(n)
0	1
1	1
2	-1
3	1
4	-2
5	-1
6	1
7	-2
8	0
9	-1
10	1
11	-2
12	-2
13	0
14	-1
15	1
16	-2
17	2
18	0
19	0
20	-1
21	1
22	-2
23	-4
24	-2
25	0
26	0
27	-1
28	1
29	-2
30	6
31	2
32	0
33	0
34	0
35	-1
36	1
37	-2
38	-10
39	0
40	-2
41	0
42	0
43	0
44	-1
45	1
46	-2
47	16
48	-4
49	2
50	0
51	0
52	0
53	0
54	-1
55	1
56	-2
57	-26
58	6
59	0
60	-2
61	0
62	0
63	0
64	0
65	-1
66	1
67	-2
68	42
69	-2
70	0
71	2
72	0
73	0
74	0
75	0
76	0
77	-1

[1, 1, -1, 1, -2, -1, 1, -2, 0, -1, 1, -2, -2, 0, -1, 1, -2, 2, 0, 0, -1, 1, -2, -4, -2, 0, 0, -1, 1, -2, 6, 2, 0, 0, 0, -1, 1, -2, -10, 0, -2, 0, 0, 0, -1, 1, -2, 16, -4, 2, 0, 0, 0, 0, -1, 1, -2, -26, 6, 0, -2, 0, 0, 0, 0, -1, 1, -2, 42, -2, 0, 2, 0, 0, 0, 0, 0, -1]

cp's OEIS Frontend

A173266 T(0,k) = 1 and T(n,k) = [x^k] (x^(n + 1) - 1)/((x - 2)*x^n + 1) for n >= 1, square array read by descending antidiagonals (n >= 0, k >= 0).

Table of values

List of values

n	a(n)
0	1
1	1
2	-1
3	1
4	-2
5	-1
6	1
7	-2
8	0
9	-1
10	1
11	-2
12	-2
13	0
14	-1
15	1
16	-2
17	2
18	0
19	0
20	-1
21	1
22	-2
23	-4
24	-2
25	0
26	0
27	-1
28	1
29	-2
30	6
31	2
32	0
33	0
34	0
35	-1
36	1
37	-2
38	-10
39	0
40	-2
41	0
42	0
43	0
44	-1
45	1
46	-2
47	16
48	-4
49	2
50	0
51	0
52	0
53	0
54	-1
55	1
56	-2
57	-26
58	6
59	0
60	-2
61	0
62	0
63	0
64	0
65	-1
66	1
67	-2
68	42
69	-2
70	0
71	2
72	0
73	0
74	0
75	0
76	0
77	-1

n	a(n)
0	1
1	1
2	-1
3	1
4	-2
5	-1
6	1
7	-2
8	0
9	-1
10	1
11	-2
12	-2
13	0
14	-1
15	1
16	-2
17	2
18	0
19	0
20	-1
21	1
22	-2
23	-4
24	-2
25	0
26	0
27	-1
28	1
29	-2
30	6
31	2
32	0
33	0
34	0
35	-1
36	1
37	-2
38	-10
39	0
40	-2
41	0
42	0
43	0
44	-1
45	1
46	-2
47	16
48	-4
49	2
50	0
51	0
52	0
53	0
54	-1
55	1
56	-2
57	-26
58	6
59	0
60	-2
61	0
62	0
63	0
64	0
65	-1
66	1
67	-2
68	42
69	-2
70	0
71	2
72	0
73	0
74	0
75	0
76	0
77	-1

n	a(n)
0	1
1	1
2	-1
3	1
4	-2
5	-1
6	1
7	-2
8	0
9	-1
10	1
11	-2
12	-2
13	0
14	-1
15	1
16	-2
17	2
18	0
19	0
20	-1
21	1
22	-2
23	-4
24	-2
25	0
26	0
27	-1
28	1
29	-2
30	6
31	2
32	0
33	0
34	0
35	-1
36	1
37	-2
38	-10
39	0
40	-2
41	0
42	0
43	0
44	-1
45	1
46	-2
47	16
48	-4
49	2
50	0
51	0
52	0
53	0
54	-1
55	1
56	-2
57	-26
58	6
59	0
60	-2
61	0
62	0
63	0
64	0
65	-1
66	1
67	-2
68	42
69	-2
70	0
71	2
72	0
73	0
74	0
75	0
76	0
77	-1