A138607 - cp's OEIS frontend

A138607 List first A008578(1) odd numbers, then first A008578(2) even numbers, then the next A008578(3) odd numbers, then the next A008578(4) even numbers, etc.

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

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

cp's OEIS Frontend

A138607 List first A008578(1) odd numbers, then first A008578(2) even numbers, then the next A008578(3) odd numbers, then the next A008578(4) even numbers, etc.

Table of values

List of values

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

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

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