A289133 - cp's OEIS frontend

A289133 a(n) is the number of odd integers divisible by 9 in ]2(n-1)^2, 2n^2[.

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

[0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18]

cp's OEIS Frontend

A289133 a(n) is the number of odd integers divisible by 9 in ]2(n-1)^2, 2n^2[.

Table of values

List of values

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

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

cp's OEIS Frontend

A289133 a(n) is the number of odd integers divisible by 9 in ]2*(n-1)^2, 2*n^2[.

Table of values

List of values

A289133 a(n) is the number of odd integers divisible by 9 in ]2(n-1)^2, 2n^2[.

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