A336557 - cp's OEIS frontend

A336557 Numbers k such that A336456(n) = Product_{p^e|n} A336456(p^e). Here each p^e is the maximal power of prime p that divides k, and A336456(n) = A335915(sigma(sigma(n))).

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	14
14	15
15	16
16	17
17	18
18	19
19	20
20	23
21	24
22	25
23	26
24	27
25	28
26	29
27	31
28	32
29	36
30	37
31	38
32	39
33	41
34	43
35	44
36	45
37	47
38	48
39	49
40	50
41	51
42	53
43	54
44	56
45	59
46	60
47	61
48	62
49	63
50	64
51	67
52	68
53	71
54	72
55	73
56	74
57	75
58	76
59	78
60	79
61	80
62	81
63	83
64	86
65	87
66	89
67	92
68	95
69	96
70	97
71	99
72	100
73	101
74	103
75	104
76	107
77	108
78	109
79	111
80	112

[1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 23, 24, 25, 26, 27, 28, 29, 31, 32, 36, 37, 38, 39, 41, 43, 44, 45, 47, 48, 49, 50, 51, 53, 54, 56, 59, 60, 61, 62, 63, 64, 67, 68, 71, 72, 73, 74, 75, 76, 78, 79, 80, 81, 83, 86, 87, 89, 92, 95, 96, 97, 99, 100, 101, 103, 104, 107, 108, 109, 111, 112]

cp's OEIS Frontend

A336557 Numbers k such that A336456(n) = Product_{p^e|n} A336456(p^e). Here each p^e is the maximal power of prime p that divides k, and A336456(n) = A335915(sigma(sigma(n))).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	14
14	15
15	16
16	17
17	18
18	19
19	20
20	23
21	24
22	25
23	26
24	27
25	28
26	29
27	31
28	32
29	36
30	37
31	38
32	39
33	41
34	43
35	44
36	45
37	47
38	48
39	49
40	50
41	51
42	53
43	54
44	56
45	59
46	60
47	61
48	62
49	63
50	64
51	67
52	68
53	71
54	72
55	73
56	74
57	75
58	76
59	78
60	79
61	80
62	81
63	83
64	86
65	87
66	89
67	92
68	95
69	96
70	97
71	99
72	100
73	101
74	103
75	104
76	107
77	108
78	109
79	111
80	112

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	14
14	15
15	16
16	17
17	18
18	19
19	20
20	23
21	24
22	25
23	26
24	27
25	28
26	29
27	31
28	32
29	36
30	37
31	38
32	39
33	41
34	43
35	44
36	45
37	47
38	48
39	49
40	50
41	51
42	53
43	54
44	56
45	59
46	60
47	61
48	62
49	63
50	64
51	67
52	68
53	71
54	72
55	73
56	74
57	75
58	76
59	78
60	79
61	80
62	81
63	83
64	86
65	87
66	89
67	92
68	95
69	96
70	97
71	99
72	100
73	101
74	103
75	104
76	107
77	108
78	109
79	111
80	112

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	11
11	12
12	13
13	14
14	15
15	16
16	17
17	18
18	19
19	20
20	23
21	24
22	25
23	26
24	27
25	28
26	29
27	31
28	32
29	36
30	37
31	38
32	39
33	41
34	43
35	44
36	45
37	47
38	48
39	49
40	50
41	51
42	53
43	54
44	56
45	59
46	60
47	61
48	62
49	63
50	64
51	67
52	68
53	71
54	72
55	73
56	74
57	75
58	76
59	78
60	79
61	80
62	81
63	83
64	86
65	87
66	89
67	92
68	95
69	96
70	97
71	99
72	100
73	101
74	103
75	104
76	107
77	108
78	109
79	111
80	112