A227419 - cp's OEIS frontend

A227419 Least k such that the sum of the semiprime divisors equals n times the sum of the prime divisors, or 0 if no such k exists.

n	a(n)
2	4
3	9
4	90
5	25
6	300
7	49
8	735
9	1770
10	7644
11	121
12	2541
13	169
14	5187
15	6710
16	8463
17	289
18	10982
19	361
20	11913
21	13202
22	24339
23	529
24	18515
25	19513
26	37851
27	20723
28	43239
29	841
30	35322
31	961
32	43215
33	20705
34	146595
35	270470
36	110823
37	1369
38	62835
39	46535
40	632316
41	1681
42	106074
43	1849

[4, 9, 90, 25, 300, 49, 735, 1770, 7644, 121, 2541, 169, 5187, 6710, 8463, 289, 10982, 361, 11913, 13202, 24339, 529, 18515, 19513, 37851, 20723, 43239, 841, 35322, 961, 43215, 20705, 146595, 270470, 110823, 1369, 62835, 46535, 632316, 1681, 106074, 1849]

cp's OEIS Frontend

A227419 Least k such that the sum of the semiprime divisors equals n times the sum of the prime divisors, or 0 if no such k exists.

Table of values

List of values