A218446 - cp's OEIS frontend

A218446 a(n) = Sum_{k>=0} floor(n/(5*k + 3)).

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

[0, 0, 0, 1, 1, 1, 2, 2, 3, 4, 4, 4, 5, 6, 6, 7, 8, 8, 10, 10, 10, 11, 11, 12, 14, 14, 15, 16, 17, 17, 18, 18, 19, 21, 21, 21, 23, 23, 24, 26, 27, 27, 28, 29, 29, 30, 31, 31, 34, 34, 34, 35, 36, 37, 39, 39, 41, 42, 43, 43, 44, 44, 44, 46, 47, 48, 50, 50, 51, 53, 53, 53, 56, 57, 57, 58, 59, 59, 62, 62, 63]

cp's OEIS Frontend

A218446 a(n) = Sum_{k>=0} floor(n/(5*k + 3)).

Table of values

List of values

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

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

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