A111940 - cp's OEIS frontend

A111940 Triangle P, read by rows, that satisfies [P^-1](n,k) = P(n+1,k+1) for n >= k >= 0, with P(k,k)=1 and P(k+1,1)=P(k+1,0) for k >= 0, where [P^-1] denotes the matrix inverse of P.

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

[1, 1, 1, -1, -1, 1, 0, 0, 1, 1, 0, 0, -1, -1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, -1, -1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, -1, -1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, 1]

cp's OEIS Frontend

A111940 Triangle P, read by rows, that satisfies [P^-1](n,k) = P(n+1,k+1) for n >= k >= 0, with P(k,k)=1 and P(k+1,1)=P(k+1,0) for k >= 0, where [P^-1] denotes the matrix inverse of P.

Table of values

List of values

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

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

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