A347388 - cp's OEIS frontend

A347388 The first 3-smooth number eventually reached when iterating Dedekind psi function from n, with a(n) = n if n is already a 3-smooth number.

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	6
7	8
8	8
9	9
10	18
11	12
12	12
13	24
14	24
15	24
16	16
17	18
18	18
19	36
20	36
21	32
22	36
23	24
24	24
25	72
26	96
27	27
28	48
29	72
30	72
31	32
32	32
33	48
34	54
35	48
36	36
37	144
38	144
39	96
40	72
41	96
42	96
43	72
44	72
45	72
46	72
47	48
48	48
49	96
50	216
51	72
52	192
53	54
54	54
55	72
56	96
57	144
58	216
59	144
60	144
61	96
62	96
63	96
64	64
65	192
66	144
67	108
68	108
69	96
70	144
71	72
72	72
73	576
74	576
75	288
76	288
77	96
78	384

[1, 2, 3, 4, 6, 6, 8, 8, 9, 18, 12, 12, 24, 24, 24, 16, 18, 18, 36, 36, 32, 36, 24, 24, 72, 96, 27, 48, 72, 72, 32, 32, 48, 54, 48, 36, 144, 144, 96, 72, 96, 96, 72, 72, 72, 72, 48, 48, 96, 216, 72, 192, 54, 54, 72, 96, 144, 216, 144, 144, 96, 96, 96, 64, 192, 144, 108, 108, 96, 144, 72, 72, 576, 576, 288, 288, 96, 384]

cp's OEIS Frontend

A347388 The first 3-smooth number eventually reached when iterating Dedekind psi function from n, with a(n) = n if n is already a 3-smooth number.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	6
7	8
8	8
9	9
10	18
11	12
12	12
13	24
14	24
15	24
16	16
17	18
18	18
19	36
20	36
21	32
22	36
23	24
24	24
25	72
26	96
27	27
28	48
29	72
30	72
31	32
32	32
33	48
34	54
35	48
36	36
37	144
38	144
39	96
40	72
41	96
42	96
43	72
44	72
45	72
46	72
47	48
48	48
49	96
50	216
51	72
52	192
53	54
54	54
55	72
56	96
57	144
58	216
59	144
60	144
61	96
62	96
63	96
64	64
65	192
66	144
67	108
68	108
69	96
70	144
71	72
72	72
73	576
74	576
75	288
76	288
77	96
78	384

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	6
7	8
8	8
9	9
10	18
11	12
12	12
13	24
14	24
15	24
16	16
17	18
18	18
19	36
20	36
21	32
22	36
23	24
24	24
25	72
26	96
27	27
28	48
29	72
30	72
31	32
32	32
33	48
34	54
35	48
36	36
37	144
38	144
39	96
40	72
41	96
42	96
43	72
44	72
45	72
46	72
47	48
48	48
49	96
50	216
51	72
52	192
53	54
54	54
55	72
56	96
57	144
58	216
59	144
60	144
61	96
62	96
63	96
64	64
65	192
66	144
67	108
68	108
69	96
70	144
71	72
72	72
73	576
74	576
75	288
76	288
77	96
78	384

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	6
7	8
8	8
9	9
10	18
11	12
12	12
13	24
14	24
15	24
16	16
17	18
18	18
19	36
20	36
21	32
22	36
23	24
24	24
25	72
26	96
27	27
28	48
29	72
30	72
31	32
32	32
33	48
34	54
35	48
36	36
37	144
38	144
39	96
40	72
41	96
42	96
43	72
44	72
45	72
46	72
47	48
48	48
49	96
50	216
51	72
52	192
53	54
54	54
55	72
56	96
57	144
58	216
59	144
60	144
61	96
62	96
63	96
64	64
65	192
66	144
67	108
68	108
69	96
70	144
71	72
72	72
73	576
74	576
75	288
76	288
77	96
78	384