A289120 - cp's OEIS frontend

A289120 a(n) is the number of odd integers divisible by 7 in ]2(n-1)^2, 2n^2[.

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

[0, 0, 1, 0, 1, 2, 1, 2, 2, 3, 2, 3, 4, 3, 4, 4, 5, 4, 5, 6, 5, 6, 6, 7, 6, 7, 8, 7, 8, 8, 9, 8, 9, 10, 9, 10, 10, 11, 10, 11, 12, 11, 12, 12, 13, 12, 13, 14, 13, 14, 14, 15, 14, 15, 16, 15, 16, 16, 17, 16, 17, 18, 17, 18, 18, 19, 18, 19, 20, 19, 20, 20, 21, 20, 21, 22, 21, 22, 22, 23, 22, 23, 24, 23, 24, 24, 25, 24, 25, 26, 25, 26, 26, 27, 26, 27, 28, 27, 28, 28, 29]

cp's OEIS Frontend

A289120 a(n) is the number of odd integers divisible by 7 in ]2(n-1)^2, 2n^2[.

Table of values

List of values

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

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

cp's OEIS Frontend

A289120 a(n) is the number of odd integers divisible by 7 in ]2*(n-1)^2, 2*n^2[.

Table of values

List of values

A289120 a(n) is the number of odd integers divisible by 7 in ]2(n-1)^2, 2n^2[.

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