A229274 - cp's OEIS frontend

A229274 Composite squarefree numbers n such that p+tau(n) divides n-sigma(n), where p are the prime factors of n, tau(n) = A000005(n) and sigma(n) = A000203(n).

n	a(n)
1	51
2	93
3	177
4	219
5	303
6	471
7	597
8	681
9	723
10	807
11	849
12	933
13	1059
14	1101
15	1227
16	1437
17	1563
18	1689
19	1731
20	1857
21	1941
22	1983
23	2319
24	2361
25	2487
26	2571
27	2823
28	2949
29	2991
30	3117
31	3327
32	3369
33	3453
34	3579
35	3747
36	3831
37	3873
38	3957
39	4083
40	4377
41	4461
42	4629
43	4713
44	4839
45	4881

[51, 93, 177, 219, 303, 471, 597, 681, 723, 807, 849, 933, 1059, 1101, 1227, 1437, 1563, 1689, 1731, 1857, 1941, 1983, 2319, 2361, 2487, 2571, 2823, 2949, 2991, 3117, 3327, 3369, 3453, 3579, 3747, 3831, 3873, 3957, 4083, 4377, 4461, 4629, 4713, 4839, 4881]

cp's OEIS Frontend

A229274 Composite squarefree numbers n such that p+tau(n) divides n-sigma(n), where p are the prime factors of n, tau(n) = A000005(n) and sigma(n) = A000203(n).

Table of values

List of values