A087507 - cp's OEIS frontend

A087507 #{0<=k<=n: k*n is divisible by 3}.

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

[1, 1, 1, 4, 2, 2, 7, 3, 3, 10, 4, 4, 13, 5, 5, 16, 6, 6, 19, 7, 7, 22, 8, 8, 25, 9, 9, 28, 10, 10, 31, 11, 11, 34, 12, 12, 37, 13, 13, 40, 14, 14, 43, 15, 15, 46, 16, 16, 49, 17, 17, 52, 18, 18, 55, 19, 19, 58, 20, 20, 61, 21, 21, 64, 22, 22, 67, 23, 23, 70, 24, 24, 73, 25, 25, 76]

cp's OEIS Frontend

A087507 #{0<=k<=n: k*n is divisible by 3}.

Table of values

List of values

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

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

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