A344878 - cp's OEIS frontend

A344878 a(n) is the least common multiple of numbers (2^(1+e2))-1 and those in the set (p_i^e_i)-1, when the odd part of n = Product (p_i^e_i), and e2 is the 2-adic valuation of n.

n	a(n)
1	1
2	3
3	2
4	7
5	4
6	6
7	6
8	15
9	8
10	12
11	10
12	14
13	12
14	6
15	4
16	31
17	16
18	24
19	18
20	28
21	6
22	30
23	22
24	30
25	24
26	12
27	26
28	42
29	28
30	12
31	30
32	63
33	10
34	48
35	12
36	56
37	36
38	18
39	12
40	60
41	40
42	6
43	42
44	70
45	8
46	66
47	46
48	62
49	48
50	24
51	16
52	84
53	52
54	78
55	20
56	30
57	18
58	84
59	58
60	28
61	60
62	30
63	24
64	127
65	12
66	30
67	66
68	112
69	22
70	12
71	70
72	120
73	72
74	36
75	24
76	126
77	30
78	12
79	78
80	124
81	80
82	120

[1, 3, 2, 7, 4, 6, 6, 15, 8, 12, 10, 14, 12, 6, 4, 31, 16, 24, 18, 28, 6, 30, 22, 30, 24, 12, 26, 42, 28, 12, 30, 63, 10, 48, 12, 56, 36, 18, 12, 60, 40, 6, 42, 70, 8, 66, 46, 62, 48, 24, 16, 84, 52, 78, 20, 30, 18, 84, 58, 28, 60, 30, 24, 127, 12, 30, 66, 112, 22, 12, 70, 120, 72, 36, 24, 126, 30, 12, 78, 124, 80, 120]

cp's OEIS Frontend

A344878 a(n) is the least common multiple of numbers (2^(1+e2))-1 and those in the set (p_i^e_i)-1, when the odd part of n = Product (p_i^e_i), and e2 is the 2-adic valuation of n.

Table of values

List of values

n	a(n)
1	1
2	3
3	2
4	7
5	4
6	6
7	6
8	15
9	8
10	12
11	10
12	14
13	12
14	6
15	4
16	31
17	16
18	24
19	18
20	28
21	6
22	30
23	22
24	30
25	24
26	12
27	26
28	42
29	28
30	12
31	30
32	63
33	10
34	48
35	12
36	56
37	36
38	18
39	12
40	60
41	40
42	6
43	42
44	70
45	8
46	66
47	46
48	62
49	48
50	24
51	16
52	84
53	52
54	78
55	20
56	30
57	18
58	84
59	58
60	28
61	60
62	30
63	24
64	127
65	12
66	30
67	66
68	112
69	22
70	12
71	70
72	120
73	72
74	36
75	24
76	126
77	30
78	12
79	78
80	124
81	80
82	120

n	a(n)
1	1
2	3
3	2
4	7
5	4
6	6
7	6
8	15
9	8
10	12
11	10
12	14
13	12
14	6
15	4
16	31
17	16
18	24
19	18
20	28
21	6
22	30
23	22
24	30
25	24
26	12
27	26
28	42
29	28
30	12
31	30
32	63
33	10
34	48
35	12
36	56
37	36
38	18
39	12
40	60
41	40
42	6
43	42
44	70
45	8
46	66
47	46
48	62
49	48
50	24
51	16
52	84
53	52
54	78
55	20
56	30
57	18
58	84
59	58
60	28
61	60
62	30
63	24
64	127
65	12
66	30
67	66
68	112
69	22
70	12
71	70
72	120
73	72
74	36
75	24
76	126
77	30
78	12
79	78
80	124
81	80
82	120

n	a(n)
1	1
2	3
3	2
4	7
5	4
6	6
7	6
8	15
9	8
10	12
11	10
12	14
13	12
14	6
15	4
16	31
17	16
18	24
19	18
20	28
21	6
22	30
23	22
24	30
25	24
26	12
27	26
28	42
29	28
30	12
31	30
32	63
33	10
34	48
35	12
36	56
37	36
38	18
39	12
40	60
41	40
42	6
43	42
44	70
45	8
46	66
47	46
48	62
49	48
50	24
51	16
52	84
53	52
54	78
55	20
56	30
57	18
58	84
59	58
60	28
61	60
62	30
63	24
64	127
65	12
66	30
67	66
68	112
69	22
70	12
71	70
72	120
73	72
74	36
75	24
76	126
77	30
78	12
79	78
80	124
81	80
82	120