A218852 - cp's OEIS frontend

A218852 Numbers n for which sigma(n) = sigma(x) + sigma(y) + sigma(z), where n = x + y + z, with x, y, z all positive.

n	a(n)
1	5
2	7
3	10
4	13
5	14
6	15
7	16
8	19
9	20
10	21
11	25
12	26
13	27
14	28
15	31
16	32
17	33
18	34
19	35
20	38
21	39
22	40
23	42
24	43
25	44
26	45
27	46
28	49
29	50
30	51
31	52
32	54
33	55
34	56
35	57
36	58
37	61
38	62
39	63
40	64
41	65
42	66
43	68
44	69
45	70
46	73
47	74
48	75
49	76
50	77
51	78
52	80
53	81
54	82
55	84
56	85
57	86
58	87
59	88
60	90
61	91
62	92
63	93
64	94
65	95
66	96

[5, 7, 10, 13, 14, 15, 16, 19, 20, 21, 25, 26, 27, 28, 31, 32, 33, 34, 35, 38, 39, 40, 42, 43, 44, 45, 46, 49, 50, 51, 52, 54, 55, 56, 57, 58, 61, 62, 63, 64, 65, 66, 68, 69, 70, 73, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96]

cp's OEIS Frontend

A218852 Numbers n for which sigma(n) = sigma(x) + sigma(y) + sigma(z), where n = x + y + z, with x, y, z all positive.

Table of values

List of values

n	a(n)
1	5
2	7
3	10
4	13
5	14
6	15
7	16
8	19
9	20
10	21
11	25
12	26
13	27
14	28
15	31
16	32
17	33
18	34
19	35
20	38
21	39
22	40
23	42
24	43
25	44
26	45
27	46
28	49
29	50
30	51
31	52
32	54
33	55
34	56
35	57
36	58
37	61
38	62
39	63
40	64
41	65
42	66
43	68
44	69
45	70
46	73
47	74
48	75
49	76
50	77
51	78
52	80
53	81
54	82
55	84
56	85
57	86
58	87
59	88
60	90
61	91
62	92
63	93
64	94
65	95
66	96

n	a(n)
1	5
2	7
3	10
4	13
5	14
6	15
7	16
8	19
9	20
10	21
11	25
12	26
13	27
14	28
15	31
16	32
17	33
18	34
19	35
20	38
21	39
22	40
23	42
24	43
25	44
26	45
27	46
28	49
29	50
30	51
31	52
32	54
33	55
34	56
35	57
36	58
37	61
38	62
39	63
40	64
41	65
42	66
43	68
44	69
45	70
46	73
47	74
48	75
49	76
50	77
51	78
52	80
53	81
54	82
55	84
56	85
57	86
58	87
59	88
60	90
61	91
62	92
63	93
64	94
65	95
66	96

n	a(n)
1	5
2	7
3	10
4	13
5	14
6	15
7	16
8	19
9	20
10	21
11	25
12	26
13	27
14	28
15	31
16	32
17	33
18	34
19	35
20	38
21	39
22	40
23	42
24	43
25	44
26	45
27	46
28	49
29	50
30	51
31	52
32	54
33	55
34	56
35	57
36	58
37	61
38	62
39	63
40	64
41	65
42	66
43	68
44	69
45	70
46	73
47	74
48	75
49	76
50	77
51	78
52	80
53	81
54	82
55	84
56	85
57	86
58	87
59	88
60	90
61	91
62	92
63	93
64	94
65	95
66	96