A174900 - cp's OEIS frontend

A174900 a(n) = the smallest numbers k such that A007955(k) = n, or 0 if there is no such k, where A007955(m) = product of divisors of m.

n	a(n)
1	1
2	2
3	3
4	0
5	5
6	0
7	7
8	4
9	0
10	0
11	11
12	0
13	13
14	0
15	0
16	0
17	17
18	0
19	19
20	0
21	0
22	0
23	23
24	0
25	0
26	0
27	9
28	0
29	29
30	0
31	31
32	0
33	0
34	0
35	0
36	6
37	37
38	0
39	0
40	0
41	41
42	0
43	43
44	0
45	0
46	0
47	47
48	0
49	0
50	0
51	0
52	0
53	53
54	0
55	0
56	0
57	0
58	0
59	59
60	0
61	61
62	0
63	0
64	8
65	0
66	0
67	67
68	0
69	0
70	0
71	71
72	0
73	73
74	0
75	0
76	0
77	0
78	0
79	79
80	0
81	0
82	0
83	83

[1, 2, 3, 0, 5, 0, 7, 4, 0, 0, 11, 0, 13, 0, 0, 0, 17, 0, 19, 0, 0, 0, 23, 0, 0, 0, 9, 0, 29, 0, 31, 0, 0, 0, 0, 6, 37, 0, 0, 0, 41, 0, 43, 0, 0, 0, 47, 0, 0, 0, 0, 0, 53, 0, 0, 0, 0, 0, 59, 0, 61, 0, 0, 8, 0, 0, 67, 0, 0, 0, 71, 0, 73, 0, 0, 0, 0, 0, 79, 0, 0, 0, 83]

cp's OEIS Frontend

A174900 a(n) = the smallest numbers k such that A007955(k) = n, or 0 if there is no such k, where A007955(m) = product of divisors of m.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	0
5	5
6	0
7	7
8	4
9	0
10	0
11	11
12	0
13	13
14	0
15	0
16	0
17	17
18	0
19	19
20	0
21	0
22	0
23	23
24	0
25	0
26	0
27	9
28	0
29	29
30	0
31	31
32	0
33	0
34	0
35	0
36	6
37	37
38	0
39	0
40	0
41	41
42	0
43	43
44	0
45	0
46	0
47	47
48	0
49	0
50	0
51	0
52	0
53	53
54	0
55	0
56	0
57	0
58	0
59	59
60	0
61	61
62	0
63	0
64	8
65	0
66	0
67	67
68	0
69	0
70	0
71	71
72	0
73	73
74	0
75	0
76	0
77	0
78	0
79	79
80	0
81	0
82	0
83	83

n	a(n)
1	1
2	2
3	3
4	0
5	5
6	0
7	7
8	4
9	0
10	0
11	11
12	0
13	13
14	0
15	0
16	0
17	17
18	0
19	19
20	0
21	0
22	0
23	23
24	0
25	0
26	0
27	9
28	0
29	29
30	0
31	31
32	0
33	0
34	0
35	0
36	6
37	37
38	0
39	0
40	0
41	41
42	0
43	43
44	0
45	0
46	0
47	47
48	0
49	0
50	0
51	0
52	0
53	53
54	0
55	0
56	0
57	0
58	0
59	59
60	0
61	61
62	0
63	0
64	8
65	0
66	0
67	67
68	0
69	0
70	0
71	71
72	0
73	73
74	0
75	0
76	0
77	0
78	0
79	79
80	0
81	0
82	0
83	83

n	a(n)
1	1
2	2
3	3
4	0
5	5
6	0
7	7
8	4
9	0
10	0
11	11
12	0
13	13
14	0
15	0
16	0
17	17
18	0
19	19
20	0
21	0
22	0
23	23
24	0
25	0
26	0
27	9
28	0
29	29
30	0
31	31
32	0
33	0
34	0
35	0
36	6
37	37
38	0
39	0
40	0
41	41
42	0
43	43
44	0
45	0
46	0
47	47
48	0
49	0
50	0
51	0
52	0
53	53
54	0
55	0
56	0
57	0
58	0
59	59
60	0
61	61
62	0
63	0
64	8
65	0
66	0
67	67
68	0
69	0
70	0
71	71
72	0
73	73
74	0
75	0
76	0
77	0
78	0
79	79
80	0
81	0
82	0
83	83