A271344 - cp's OEIS frontend

A271344 Triangle read by rows: T(n,k), n>=1, k>=1, in which column k lists the odd numbers multiplied by -1, interleaved with k-1 zeros, but T(n,1) = 1 and the first element of column k is in row k(k+1)/2.

n	a(n)
1	1
2	1
3	1
4	-1
5	1
6	0
7	1
8	-3
9	1
10	0
11	-1
12	1
13	-5
14	0
15	1
16	0
17	0
18	1
19	-7
20	-3
21	1
22	0
23	0
24	-1
25	1
26	-9
27	0
28	0
29	1
30	0
31	-5
32	0
33	1
34	-11
35	0
36	0
37	1
38	0
39	0
40	-3
41	1
42	-13
43	-7
44	0
45	-1
46	1
47	0
48	0
49	0
50	0
51	1
52	-15
53	0
54	0
55	0
56	1
57	0
58	-9
59	-5
60	0
61	1
62	-17
63	0
64	0
65	0
66	1
67	0
68	0
69	0
70	-3
71	1
72	-19
73	-11
74	0
75	0
76	-1
77	1
78	0
79	0
80	-7
81	0
82	0
83	1
84	-21
85	0
86	0
87	0
88	0
89	1
90	0
91	-13
92	0
93	0
94	0

[1, 1, 1, -1, 1, 0, 1, -3, 1, 0, -1, 1, -5, 0, 1, 0, 0, 1, -7, -3, 1, 0, 0, -1, 1, -9, 0, 0, 1, 0, -5, 0, 1, -11, 0, 0, 1, 0, 0, -3, 1, -13, -7, 0, -1, 1, 0, 0, 0, 0, 1, -15, 0, 0, 0, 1, 0, -9, -5, 0, 1, -17, 0, 0, 0, 1, 0, 0, 0, -3, 1, -19, -11, 0, 0, -1, 1, 0, 0, -7, 0, 0, 1, -21, 0, 0, 0, 0, 1, 0, -13, 0, 0, 0]

cp's OEIS Frontend

A271344 Triangle read by rows: T(n,k), n>=1, k>=1, in which column k lists the odd numbers multiplied by -1, interleaved with k-1 zeros, but T(n,1) = 1 and the first element of column k is in row k(k+1)/2.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	-1
5	1
6	0
7	1
8	-3
9	1
10	0
11	-1
12	1
13	-5
14	0
15	1
16	0
17	0
18	1
19	-7
20	-3
21	1
22	0
23	0
24	-1
25	1
26	-9
27	0
28	0
29	1
30	0
31	-5
32	0
33	1
34	-11
35	0
36	0
37	1
38	0
39	0
40	-3
41	1
42	-13
43	-7
44	0
45	-1
46	1
47	0
48	0
49	0
50	0
51	1
52	-15
53	0
54	0
55	0
56	1
57	0
58	-9
59	-5
60	0
61	1
62	-17
63	0
64	0
65	0
66	1
67	0
68	0
69	0
70	-3
71	1
72	-19
73	-11
74	0
75	0
76	-1
77	1
78	0
79	0
80	-7
81	0
82	0
83	1
84	-21
85	0
86	0
87	0
88	0
89	1
90	0
91	-13
92	0
93	0
94	0

n	a(n)
1	1
2	1
3	1
4	-1
5	1
6	0
7	1
8	-3
9	1
10	0
11	-1
12	1
13	-5
14	0
15	1
16	0
17	0
18	1
19	-7
20	-3
21	1
22	0
23	0
24	-1
25	1
26	-9
27	0
28	0
29	1
30	0
31	-5
32	0
33	1
34	-11
35	0
36	0
37	1
38	0
39	0
40	-3
41	1
42	-13
43	-7
44	0
45	-1
46	1
47	0
48	0
49	0
50	0
51	1
52	-15
53	0
54	0
55	0
56	1
57	0
58	-9
59	-5
60	0
61	1
62	-17
63	0
64	0
65	0
66	1
67	0
68	0
69	0
70	-3
71	1
72	-19
73	-11
74	0
75	0
76	-1
77	1
78	0
79	0
80	-7
81	0
82	0
83	1
84	-21
85	0
86	0
87	0
88	0
89	1
90	0
91	-13
92	0
93	0
94	0

n	a(n)
1	1
2	1
3	1
4	-1
5	1
6	0
7	1
8	-3
9	1
10	0
11	-1
12	1
13	-5
14	0
15	1
16	0
17	0
18	1
19	-7
20	-3
21	1
22	0
23	0
24	-1
25	1
26	-9
27	0
28	0
29	1
30	0
31	-5
32	0
33	1
34	-11
35	0
36	0
37	1
38	0
39	0
40	-3
41	1
42	-13
43	-7
44	0
45	-1
46	1
47	0
48	0
49	0
50	0
51	1
52	-15
53	0
54	0
55	0
56	1
57	0
58	-9
59	-5
60	0
61	1
62	-17
63	0
64	0
65	0
66	1
67	0
68	0
69	0
70	-3
71	1
72	-19
73	-11
74	0
75	0
76	-1
77	1
78	0
79	0
80	-7
81	0
82	0
83	1
84	-21
85	0
86	0
87	0
88	0
89	1
90	0
91	-13
92	0
93	0
94	0