A339794 - cp's OEIS frontend

A339794 a(n) is the least integer k satisfying rad(k)^2 < sigma(k) and whose prime factors set is the same as the prime factors set of A005117(n+1).

n	a(n)
1	4
2	9
3	25
4	18
5	49
6	80
7	121
8	169
9	112
10	135
11	289
12	361
13	441
14	352
15	529
16	416
17	841
18	360
19	961
20	891
21	1088
22	875
23	1369
24	1216
25	1053
26	1681
27	672
28	1849
29	1472
30	2209
31	2601
32	2809
33	3025
34	3249
35	1856
36	3481
37	3721
38	1984
39	4225
40	1584
41	4489
42	4761
43	1960
44	5041
45	5329
46	4736
47	5929
48	2496
49	6241

[4, 9, 25, 18, 49, 80, 121, 169, 112, 135, 289, 361, 441, 352, 529, 416, 841, 360, 961, 891, 1088, 875, 1369, 1216, 1053, 1681, 672, 1849, 1472, 2209, 2601, 2809, 3025, 3249, 1856, 3481, 3721, 1984, 4225, 1584, 4489, 4761, 1960, 5041, 5329, 4736, 5929, 2496, 6241]

cp's OEIS Frontend

A339794 a(n) is the least integer k satisfying rad(k)^2 < sigma(k) and whose prime factors set is the same as the prime factors set of A005117(n+1).

Table of values

List of values