A336354 - cp's OEIS frontend

A336354 Numbers k such that p^2 divides k, where p = A006530(k), the largest prime factor of k, and sigma(k) does not have any prime factor larger than p.

n	a(n)
1	343
2	686
3	1029
4	1372
5	1715
6	2058
7	2744
8	3430
9	4116
10	4489
11	5145
12	6241
13	6860
14	8232
15	8978
16	9261
17	10290
18	10976
19	12482
20	13467
21	13720
22	17956
23	18522
24	18723
25	18769
26	20580
27	22201
28	22445
29	24964
30	26569
31	26934
32	31205
33	31423
34	32761
35	32928
36	35912
37	36481
38	37044
39	37446
40	37538
41	40401

[343, 686, 1029, 1372, 1715, 2058, 2744, 3430, 4116, 4489, 5145, 6241, 6860, 8232, 8978, 9261, 10290, 10976, 12482, 13467, 13720, 17956, 18522, 18723, 18769, 20580, 22201, 22445, 24964, 26569, 26934, 31205, 31423, 32761, 32928, 35912, 36481, 37044, 37446, 37538, 40401]

cp's OEIS Frontend

A336354 Numbers k such that p^2 divides k, where p = A006530(k), the largest prime factor of k, and sigma(k) does not have any prime factor larger than p.

Table of values

List of values