A357872 - cp's OEIS frontend

A357872 a(n) = n * (3/2)^(v(n, 2) - v(n, 3)) where v(n, k) = valuation(n, k) mod 2 for n > 0.

n	a(n)
1	1
2	3
3	2
4	4
5	5
6	6
7	7
8	12
9	9
10	15
11	11
12	8
13	13
14	21
15	10
16	16
17	17
18	27
19	19
20	20
21	14
22	33
23	23
24	24
25	25
26	39
27	18
28	28
29	29
30	30
31	31
32	48
33	22
34	51
35	35
36	36
37	37
38	57
39	26
40	60
41	41
42	42
43	43
44	44
45	45
46	69
47	47
48	32
49	49
50	75
51	34
52	52
53	53
54	54
55	55
56	84
57	38
58	87
59	59
60	40
61	61
62	93
63	63
64	64
65	65
66	66
67	67
68	68
69	46
70	105
71	71
72	108
73	73
74	111

[1, 3, 2, 4, 5, 6, 7, 12, 9, 15, 11, 8, 13, 21, 10, 16, 17, 27, 19, 20, 14, 33, 23, 24, 25, 39, 18, 28, 29, 30, 31, 48, 22, 51, 35, 36, 37, 57, 26, 60, 41, 42, 43, 44, 45, 69, 47, 32, 49, 75, 34, 52, 53, 54, 55, 84, 38, 87, 59, 40, 61, 93, 63, 64, 65, 66, 67, 68, 46, 105, 71, 108, 73, 111]

cp's OEIS Frontend

A357872 a(n) = n * (3/2)^(v(n, 2) - v(n, 3)) where v(n, k) = valuation(n, k) mod 2 for n > 0.

Table of values

List of values

n	a(n)
1	1
2	3
3	2
4	4
5	5
6	6
7	7
8	12
9	9
10	15
11	11
12	8
13	13
14	21
15	10
16	16
17	17
18	27
19	19
20	20
21	14
22	33
23	23
24	24
25	25
26	39
27	18
28	28
29	29
30	30
31	31
32	48
33	22
34	51
35	35
36	36
37	37
38	57
39	26
40	60
41	41
42	42
43	43
44	44
45	45
46	69
47	47
48	32
49	49
50	75
51	34
52	52
53	53
54	54
55	55
56	84
57	38
58	87
59	59
60	40
61	61
62	93
63	63
64	64
65	65
66	66
67	67
68	68
69	46
70	105
71	71
72	108
73	73
74	111

n	a(n)
1	1
2	3
3	2
4	4
5	5
6	6
7	7
8	12
9	9
10	15
11	11
12	8
13	13
14	21
15	10
16	16
17	17
18	27
19	19
20	20
21	14
22	33
23	23
24	24
25	25
26	39
27	18
28	28
29	29
30	30
31	31
32	48
33	22
34	51
35	35
36	36
37	37
38	57
39	26
40	60
41	41
42	42
43	43
44	44
45	45
46	69
47	47
48	32
49	49
50	75
51	34
52	52
53	53
54	54
55	55
56	84
57	38
58	87
59	59
60	40
61	61
62	93
63	63
64	64
65	65
66	66
67	67
68	68
69	46
70	105
71	71
72	108
73	73
74	111

n	a(n)
1	1
2	3
3	2
4	4
5	5
6	6
7	7
8	12
9	9
10	15
11	11
12	8
13	13
14	21
15	10
16	16
17	17
18	27
19	19
20	20
21	14
22	33
23	23
24	24
25	25
26	39
27	18
28	28
29	29
30	30
31	31
32	48
33	22
34	51
35	35
36	36
37	37
38	57
39	26
40	60
41	41
42	42
43	43
44	44
45	45
46	69
47	47
48	32
49	49
50	75
51	34
52	52
53	53
54	54
55	55
56	84
57	38
58	87
59	59
60	40
61	61
62	93
63	63
64	64
65	65
66	66
67	67
68	68
69	46
70	105
71	71
72	108
73	73
74	111