A279690 - cp's OEIS frontend

A279690 Smallest number with equivalent prime tower factorization as n.

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

[1, 2, 2, 4, 2, 6, 2, 8, 8, 6, 2, 12, 2, 6, 6, 16, 2, 18, 2, 12, 6, 6, 2, 18, 8, 6, 4, 12, 2, 30, 2, 8, 6, 6, 6, 36, 2, 6, 6, 40, 2, 30, 2, 12, 40, 6, 2, 48, 8, 18, 6, 12, 2, 12, 6, 40, 6, 6, 2, 60, 2, 6, 40, 64, 6, 30, 2, 12, 6, 30, 2, 72, 2, 6, 40, 12, 6, 30]

cp's OEIS Frontend

A279690 Smallest number with equivalent prime tower factorization as n.

Table of values

List of values

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

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

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