A127915 - cp's OEIS frontend

A127915 a(1)=1, a(2)=2. For n >= 3, a(n) is the smallest positive integer not occurring earlier in the sequence such that floor(a(n)/a(n-1)) does not equal floor(a(n-1)/a(n-2)).

n	a(n)
1	1
2	2
3	3
4	6
5	4
6	5
7	10
8	7
9	8
10	16
11	9
12	11
13	22
14	12
15	13
16	26
17	14
18	15
19	30
20	17
21	18
22	36
23	19
24	20
25	40
26	21
27	23
28	46
29	24
30	25
31	50
32	27
33	28
34	56
35	29
36	31
37	62
38	32
39	33
40	66
41	34
42	35
43	70
44	37
45	38
46	76
47	39
48	41
49	82
50	42
51	43
52	86
53	44
54	45
55	90
56	47
57	48
58	96
59	49
60	51
61	102
62	52
63	53
64	106
65	54
66	55
67	110
68	57
69	58
70	116
71	59

[1, 2, 3, 6, 4, 5, 10, 7, 8, 16, 9, 11, 22, 12, 13, 26, 14, 15, 30, 17, 18, 36, 19, 20, 40, 21, 23, 46, 24, 25, 50, 27, 28, 56, 29, 31, 62, 32, 33, 66, 34, 35, 70, 37, 38, 76, 39, 41, 82, 42, 43, 86, 44, 45, 90, 47, 48, 96, 49, 51, 102, 52, 53, 106, 54, 55, 110, 57, 58, 116, 59]

cp's OEIS Frontend

A127915 a(1)=1, a(2)=2. For n >= 3, a(n) is the smallest positive integer not occurring earlier in the sequence such that floor(a(n)/a(n-1)) does not equal floor(a(n-1)/a(n-2)).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	6
5	4
6	5
7	10
8	7
9	8
10	16
11	9
12	11
13	22
14	12
15	13
16	26
17	14
18	15
19	30
20	17
21	18
22	36
23	19
24	20
25	40
26	21
27	23
28	46
29	24
30	25
31	50
32	27
33	28
34	56
35	29
36	31
37	62
38	32
39	33
40	66
41	34
42	35
43	70
44	37
45	38
46	76
47	39
48	41
49	82
50	42
51	43
52	86
53	44
54	45
55	90
56	47
57	48
58	96
59	49
60	51
61	102
62	52
63	53
64	106
65	54
66	55
67	110
68	57
69	58
70	116
71	59

n	a(n)
1	1
2	2
3	3
4	6
5	4
6	5
7	10
8	7
9	8
10	16
11	9
12	11
13	22
14	12
15	13
16	26
17	14
18	15
19	30
20	17
21	18
22	36
23	19
24	20
25	40
26	21
27	23
28	46
29	24
30	25
31	50
32	27
33	28
34	56
35	29
36	31
37	62
38	32
39	33
40	66
41	34
42	35
43	70
44	37
45	38
46	76
47	39
48	41
49	82
50	42
51	43
52	86
53	44
54	45
55	90
56	47
57	48
58	96
59	49
60	51
61	102
62	52
63	53
64	106
65	54
66	55
67	110
68	57
69	58
70	116
71	59

n	a(n)
1	1
2	2
3	3
4	6
5	4
6	5
7	10
8	7
9	8
10	16
11	9
12	11
13	22
14	12
15	13
16	26
17	14
18	15
19	30
20	17
21	18
22	36
23	19
24	20
25	40
26	21
27	23
28	46
29	24
30	25
31	50
32	27
33	28
34	56
35	29
36	31
37	62
38	32
39	33
40	66
41	34
42	35
43	70
44	37
45	38
46	76
47	39
48	41
49	82
50	42
51	43
52	86
53	44
54	45
55	90
56	47
57	48
58	96
59	49
60	51
61	102
62	52
63	53
64	106
65	54
66	55
67	110
68	57
69	58
70	116
71	59