A351542 - cp's OEIS frontend

A351542 Even numbers k that have an odd prime factor p such that p also divides sigma(k), but valuation(k,p) differs from valuation(sigma(k), p), and p does not divide A003961(k), where A003961 is fully multiplicative with a(p) = nextprime(p), and sigma is the sum of divisors function.

n	a(n)
1	196
2	200
3	364
4	588
5	760
6	950
7	1000
8	1092
9	1148
10	1160
11	1274
12	1358
13	1372
14	1400
15	1450
16	1490
17	1568
18	1764
19	1782
20	1900
21	1990
22	2156
23	2200
24	2324
25	2360
26	2600
27	2716
28	2900
29	2912
30	2950
31	2980
32	3042
33	3160
34	3200
35	3276
36	3332
37	3388
38	3400
39	3430
40	3444
41	3490
42	3560
43	3564
44	3724
45	3822
46	3892
47	3950
48	3980
49	4004
50	4018
51	4074
52	4102
53	4116
54	4360

[196, 200, 364, 588, 760, 950, 1000, 1092, 1148, 1160, 1274, 1358, 1372, 1400, 1450, 1490, 1568, 1764, 1782, 1900, 1990, 2156, 2200, 2324, 2360, 2600, 2716, 2900, 2912, 2950, 2980, 3042, 3160, 3200, 3276, 3332, 3388, 3400, 3430, 3444, 3490, 3560, 3564, 3724, 3822, 3892, 3950, 3980, 4004, 4018, 4074, 4102, 4116, 4360]

cp's OEIS Frontend

A351542 Even numbers k that have an odd prime factor p such that p also divides sigma(k), but valuation(k,p) differs from valuation(sigma(k), p), and p does not divide A003961(k), where A003961 is fully multiplicative with a(p) = nextprime(p), and sigma is the sum of divisors function.

Table of values

List of values