A238745 - cp's OEIS frontend

A238745 a(1) = 1; for n > 1, if the first integer with the same prime signature as n is factorized into primorials as Product A002110(i)^e(i), then a(n) = Product prime(i)^e(i).

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	3
7	2
8	8
9	4
10	3
11	2
12	6
13	2
14	3
15	3
16	16
17	2
18	6
19	2
20	6
21	3
22	3
23	2
24	12
25	4
26	3
27	8
28	6
29	2
30	5
31	2
32	32
33	3
34	3
35	3
36	9
37	2
38	3
39	3
40	12
41	2
42	5
43	2
44	6
45	6
46	3
47	2
48	24
49	4
50	6
51	3
52	6
53	2
54	12
55	3
56	12
57	3
58	3
59	2
60	10
61	2
62	3
63	6
64	64
65	3
66	5
67	2
68	6
69	3
70	5
71	2
72	18
73	2
74	3
75	6
76	6
77	3
78	5
79	2
80	24
81	16
82	3
83	2

[1, 2, 2, 4, 2, 3, 2, 8, 4, 3, 2, 6, 2, 3, 3, 16, 2, 6, 2, 6, 3, 3, 2, 12, 4, 3, 8, 6, 2, 5, 2, 32, 3, 3, 3, 9, 2, 3, 3, 12, 2, 5, 2, 6, 6, 3, 2, 24, 4, 6, 3, 6, 2, 12, 3, 12, 3, 3, 2, 10, 2, 3, 6, 64, 3, 5, 2, 6, 3, 5, 2, 18, 2, 3, 6, 6, 3, 5, 2, 24, 16, 3, 2]

cp's OEIS Frontend

A238745 a(1) = 1; for n > 1, if the first integer with the same prime signature as n is factorized into primorials as Product A002110(i)^e(i), then a(n) = Product prime(i)^e(i).

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	3
7	2
8	8
9	4
10	3
11	2
12	6
13	2
14	3
15	3
16	16
17	2
18	6
19	2
20	6
21	3
22	3
23	2
24	12
25	4
26	3
27	8
28	6
29	2
30	5
31	2
32	32
33	3
34	3
35	3
36	9
37	2
38	3
39	3
40	12
41	2
42	5
43	2
44	6
45	6
46	3
47	2
48	24
49	4
50	6
51	3
52	6
53	2
54	12
55	3
56	12
57	3
58	3
59	2
60	10
61	2
62	3
63	6
64	64
65	3
66	5
67	2
68	6
69	3
70	5
71	2
72	18
73	2
74	3
75	6
76	6
77	3
78	5
79	2
80	24
81	16
82	3
83	2

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	3
7	2
8	8
9	4
10	3
11	2
12	6
13	2
14	3
15	3
16	16
17	2
18	6
19	2
20	6
21	3
22	3
23	2
24	12
25	4
26	3
27	8
28	6
29	2
30	5
31	2
32	32
33	3
34	3
35	3
36	9
37	2
38	3
39	3
40	12
41	2
42	5
43	2
44	6
45	6
46	3
47	2
48	24
49	4
50	6
51	3
52	6
53	2
54	12
55	3
56	12
57	3
58	3
59	2
60	10
61	2
62	3
63	6
64	64
65	3
66	5
67	2
68	6
69	3
70	5
71	2
72	18
73	2
74	3
75	6
76	6
77	3
78	5
79	2
80	24
81	16
82	3
83	2

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	3
7	2
8	8
9	4
10	3
11	2
12	6
13	2
14	3
15	3
16	16
17	2
18	6
19	2
20	6
21	3
22	3
23	2
24	12
25	4
26	3
27	8
28	6
29	2
30	5
31	2
32	32
33	3
34	3
35	3
36	9
37	2
38	3
39	3
40	12
41	2
42	5
43	2
44	6
45	6
46	3
47	2
48	24
49	4
50	6
51	3
52	6
53	2
54	12
55	3
56	12
57	3
58	3
59	2
60	10
61	2
62	3
63	6
64	64
65	3
66	5
67	2
68	6
69	3
70	5
71	2
72	18
73	2
74	3
75	6
76	6
77	3
78	5
79	2
80	24
81	16
82	3
83	2