A195121 - cp's OEIS frontend

A195121 a(n) = 2*n - floor(n/r), where r = (1 + sqrt(5))/2 (the golden ratio).

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

[0, 2, 3, 5, 6, 7, 9, 10, 12, 13, 14, 16, 17, 18, 20, 21, 23, 24, 25, 27, 28, 30, 31, 32, 34, 35, 36, 38, 39, 41, 42, 43, 45, 46, 47, 49, 50, 52, 53, 54, 56, 57, 59, 60, 61, 63, 64, 65, 67, 68, 70, 71, 72, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 88, 89, 90, 92, 93, 94]

cp's OEIS Frontend

A195121 a(n) = 2*n - floor(n/r), where r = (1 + sqrt(5))/2 (the golden ratio).

Table of values

List of values

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

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

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