A372567 - cp's OEIS frontend

A372567 Odd numbers k such that k, sigma(k) and A003961(k) have a common divisor larger than 1, where A003961(n) is fully multiplicative function with a(prime(i)) = prime(i+1).

n	a(n)
1	135
2	285
3	435
4	455
5	675
6	855
7	885
8	945
9	1185
10	1287
11	1305
12	1335
13	1365
14	1425
15	1435
16	1485
17	1635
18	1755
19	1995
20	2085
21	2175
22	2235
23	2275
24	2295
25	2565
26	2655
27	2685
28	2905
29	2985
30	3045
31	3105
32	3135
33	3185
34	3311
35	3375
36	3395
37	3435
38	3555
39	3585
40	3705
41	3915
42	4005
43	4035
44	4095
45	4185
46	4235
47	4275
48	4305
49	4425
50	4725
51	4785
52	4845
53	4865
54	4905

[135, 285, 435, 455, 675, 855, 885, 945, 1185, 1287, 1305, 1335, 1365, 1425, 1435, 1485, 1635, 1755, 1995, 2085, 2175, 2235, 2275, 2295, 2565, 2655, 2685, 2905, 2985, 3045, 3105, 3135, 3185, 3311, 3375, 3395, 3435, 3555, 3585, 3705, 3915, 4005, 4035, 4095, 4185, 4235, 4275, 4305, 4425, 4725, 4785, 4845, 4865, 4905]

cp's OEIS Frontend

A372567 Odd numbers k such that k, sigma(k) and A003961(k) have a common divisor larger than 1, where A003961(n) is fully multiplicative function with a(prime(i)) = prime(i+1).

Table of values

List of values