A308638 - cp's OEIS frontend

A308638 a(n) is the number of k > 0 such that n-1-2k > 0 and the points (n-1-2k, a(n-1-2*k)), (n-1-k, a(n-1-k)) and (n-1, a(n-1)) are aligned.

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

[0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 2, 3, 1, 1, 1, 1, 3, 0, 1, 2, 3, 1, 4, 2, 1, 3, 2, 4, 1, 1, 2, 2, 2, 3, 3, 4, 2, 3, 3, 2, 4, 4, 0, 1, 3, 2, 1, 3, 4, 5, 3, 6, 5, 3, 2, 6, 0, 3, 6, 4, 0, 3, 5, 5, 5, 4, 3, 6, 3, 3, 7, 3, 2, 3, 3, 2, 2, 1, 3, 5, 6, 4, 2, 4, 5]

cp's OEIS Frontend

A308638 a(n) is the number of k > 0 such that n-1-2k > 0 and the points (n-1-2k, a(n-1-2*k)), (n-1-k, a(n-1-k)) and (n-1, a(n-1)) are aligned.

Table of values

List of values

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

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

cp's OEIS Frontend

A308638 a(n) is the number of k > 0 such that n-1-2*k > 0 and the points (n-1-2*k, a(n-1-2*k)), (n-1-k, a(n-1-k)) and (n-1, a(n-1)) are aligned.

Table of values

List of values

A308638 a(n) is the number of k > 0 such that n-1-2k > 0 and the points (n-1-2k, a(n-1-2*k)), (n-1-k, a(n-1-k)) and (n-1, a(n-1)) are aligned.

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