A020944 - cp's OEIS frontend

A020944 a(2n+1) = |a(2n) - a(2n-1)|, a(2n) = a(n) + a(n-1), a(0) = -1.

n	a(n)
0	-1
1	1
2	0
3	1
4	1
5	0
6	1
7	1
8	2
9	1
10	1
11	0
12	1
13	1
14	2
15	1
16	3
17	2
18	3
19	1
20	2
21	1
22	1
23	0
24	1
25	1
26	2
27	1
28	3
29	2
30	3
31	1
32	4
33	3
34	5
35	2
36	5
37	3
38	4
39	1
40	3
41	2
42	3
43	1
44	2
45	1
46	1
47	0
48	1
49	1
50	2
51	1
52	3
53	2
54	3
55	1
56	4
57	3
58	5
59	2
60	5
61	3
62	4
63	1
64	5
65	4
66	7
67	3
68	8
69	5
70	7
71	2
72	7
73	5
74	8
75	3
76	7
77	4
78	5
79	1
80	4
81	3
82	5
83	2
84	5
85	3
86	4
87	1
88	3
89	2
90	3
91	1
92	2
93	1
94	1
95	0
96	1
97	1
98	2
99	1
100	3
101	2
102	3
103	1
104	4
105	3

[-1, 1, 0, 1, 1, 0, 1, 1, 2, 1, 1, 0, 1, 1, 2, 1, 3, 2, 3, 1, 2, 1, 1, 0, 1, 1, 2, 1, 3, 2, 3, 1, 4, 3, 5, 2, 5, 3, 4, 1, 3, 2, 3, 1, 2, 1, 1, 0, 1, 1, 2, 1, 3, 2, 3, 1, 4, 3, 5, 2, 5, 3, 4, 1, 5, 4, 7, 3, 8, 5, 7, 2, 7, 5, 8, 3, 7, 4, 5, 1, 4, 3, 5, 2, 5, 3, 4, 1, 3, 2, 3, 1, 2, 1, 1, 0, 1, 1, 2, 1, 3, 2, 3, 1, 4, 3]

cp's OEIS Frontend

A020944 a(2n+1) = |a(2n) - a(2n-1)|, a(2n) = a(n) + a(n-1), a(0) = -1.

Table of values

List of values

n	a(n)
0	-1
1	1
2	0
3	1
4	1
5	0
6	1
7	1
8	2
9	1
10	1
11	0
12	1
13	1
14	2
15	1
16	3
17	2
18	3
19	1
20	2
21	1
22	1
23	0
24	1
25	1
26	2
27	1
28	3
29	2
30	3
31	1
32	4
33	3
34	5
35	2
36	5
37	3
38	4
39	1
40	3
41	2
42	3
43	1
44	2
45	1
46	1
47	0
48	1
49	1
50	2
51	1
52	3
53	2
54	3
55	1
56	4
57	3
58	5
59	2
60	5
61	3
62	4
63	1
64	5
65	4
66	7
67	3
68	8
69	5
70	7
71	2
72	7
73	5
74	8
75	3
76	7
77	4
78	5
79	1
80	4
81	3
82	5
83	2
84	5
85	3
86	4
87	1
88	3
89	2
90	3
91	1
92	2
93	1
94	1
95	0
96	1
97	1
98	2
99	1
100	3
101	2
102	3
103	1
104	4
105	3

n	a(n)
0	-1
1	1
2	0
3	1
4	1
5	0
6	1
7	1
8	2
9	1
10	1
11	0
12	1
13	1
14	2
15	1
16	3
17	2
18	3
19	1
20	2
21	1
22	1
23	0
24	1
25	1
26	2
27	1
28	3
29	2
30	3
31	1
32	4
33	3
34	5
35	2
36	5
37	3
38	4
39	1
40	3
41	2
42	3
43	1
44	2
45	1
46	1
47	0
48	1
49	1
50	2
51	1
52	3
53	2
54	3
55	1
56	4
57	3
58	5
59	2
60	5
61	3
62	4
63	1
64	5
65	4
66	7
67	3
68	8
69	5
70	7
71	2
72	7
73	5
74	8
75	3
76	7
77	4
78	5
79	1
80	4
81	3
82	5
83	2
84	5
85	3
86	4
87	1
88	3
89	2
90	3
91	1
92	2
93	1
94	1
95	0
96	1
97	1
98	2
99	1
100	3
101	2
102	3
103	1
104	4
105	3

n	a(n)
0	-1
1	1
2	0
3	1
4	1
5	0
6	1
7	1
8	2
9	1
10	1
11	0
12	1
13	1
14	2
15	1
16	3
17	2
18	3
19	1
20	2
21	1
22	1
23	0
24	1
25	1
26	2
27	1
28	3
29	2
30	3
31	1
32	4
33	3
34	5
35	2
36	5
37	3
38	4
39	1
40	3
41	2
42	3
43	1
44	2
45	1
46	1
47	0
48	1
49	1
50	2
51	1
52	3
53	2
54	3
55	1
56	4
57	3
58	5
59	2
60	5
61	3
62	4
63	1
64	5
65	4
66	7
67	3
68	8
69	5
70	7
71	2
72	7
73	5
74	8
75	3
76	7
77	4
78	5
79	1
80	4
81	3
82	5
83	2
84	5
85	3
86	4
87	1
88	3
89	2
90	3
91	1
92	2
93	1
94	1
95	0
96	1
97	1
98	2
99	1
100	3
101	2
102	3
103	1
104	4
105	3