A080702 - cp's OEIS frontend

A080702 a(1)=3; for n>1, a(n) = smallest number > a(n-1) such that the condition "if n is in the sequence then a(n) is even" is satisfied.

n	a(n)
1	3
2	4
3	6
4	8
5	9
6	10
7	11
8	12
9	14
10	16
11	18
12	20
13	21
14	22
15	23
16	24
17	25
18	26
19	27
20	28
21	30
22	32
23	34
24	36
25	38
26	40
27	42
28	44
29	45
30	46
31	47
32	48
33	49
34	50
35	51
36	52
37	53
38	54
39	55
40	56
41	57
42	58
43	59
44	60
45	62
46	64
47	66
48	68
49	70
50	72
51	74
52	76
53	78
54	80
55	82
56	84
57	86
58	88
59	90
60	92
61	93
62	94
63	95
64	96
65	97
66	98
67	99
68	100
69	101
70	102

[3, 4, 6, 8, 9, 10, 11, 12, 14, 16, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102]

cp's OEIS Frontend

A080702 a(1)=3; for n>1, a(n) = smallest number > a(n-1) such that the condition "if n is in the sequence then a(n) is even" is satisfied.

Table of values

List of values

n	a(n)
1	3
2	4
3	6
4	8
5	9
6	10
7	11
8	12
9	14
10	16
11	18
12	20
13	21
14	22
15	23
16	24
17	25
18	26
19	27
20	28
21	30
22	32
23	34
24	36
25	38
26	40
27	42
28	44
29	45
30	46
31	47
32	48
33	49
34	50
35	51
36	52
37	53
38	54
39	55
40	56
41	57
42	58
43	59
44	60
45	62
46	64
47	66
48	68
49	70
50	72
51	74
52	76
53	78
54	80
55	82
56	84
57	86
58	88
59	90
60	92
61	93
62	94
63	95
64	96
65	97
66	98
67	99
68	100
69	101
70	102

n	a(n)
1	3
2	4
3	6
4	8
5	9
6	10
7	11
8	12
9	14
10	16
11	18
12	20
13	21
14	22
15	23
16	24
17	25
18	26
19	27
20	28
21	30
22	32
23	34
24	36
25	38
26	40
27	42
28	44
29	45
30	46
31	47
32	48
33	49
34	50
35	51
36	52
37	53
38	54
39	55
40	56
41	57
42	58
43	59
44	60
45	62
46	64
47	66
48	68
49	70
50	72
51	74
52	76
53	78
54	80
55	82
56	84
57	86
58	88
59	90
60	92
61	93
62	94
63	95
64	96
65	97
66	98
67	99
68	100
69	101
70	102

n	a(n)
1	3
2	4
3	6
4	8
5	9
6	10
7	11
8	12
9	14
10	16
11	18
12	20
13	21
14	22
15	23
16	24
17	25
18	26
19	27
20	28
21	30
22	32
23	34
24	36
25	38
26	40
27	42
28	44
29	45
30	46
31	47
32	48
33	49
34	50
35	51
36	52
37	53
38	54
39	55
40	56
41	57
42	58
43	59
44	60
45	62
46	64
47	66
48	68
49	70
50	72
51	74
52	76
53	78
54	80
55	82
56	84
57	86
58	88
59	90
60	92
61	93
62	94
63	95
64	96
65	97
66	98
67	99
68	100
69	101
70	102