A120613 - cp's OEIS frontend

A120613 a(n) = floor(phi*floor(n/phi)) where phi=(1+sqrt(5))/2.

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

[0, 1, 1, 3, 4, 4, 6, 6, 8, 9, 9, 11, 12, 12, 14, 14, 16, 17, 17, 19, 19, 21, 22, 22, 24, 25, 25, 27, 27, 29, 30, 30, 32, 33, 33, 35, 35, 37, 38, 38, 40, 40, 42, 43, 43, 45, 46, 46, 48, 48, 50, 51, 51, 53, 53, 55, 56, 56, 58, 59, 59, 61, 61, 63, 64, 64, 66, 67, 67, 69, 69, 71, 72]

cp's OEIS Frontend

A120613 a(n) = floor(phi*floor(n/phi)) where phi=(1+sqrt(5))/2.

Table of values

List of values

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

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

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