A211347 - cp's OEIS frontend

A211347 Numbers n such that n = sigma_k(m) for some k >= 1.

n	a(n)
1	1
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	17
15	18
16	20
17	21
18	24
19	26
20	28
21	30
22	31
23	32
24	33
25	36
26	38
27	39
28	40
29	42
30	44
31	48
32	50
33	54
34	56
35	57
36	60
37	62
38	63
39	65
40	68
41	72
42	73
43	74
44	78
45	80
46	82
47	84
48	85
49	90
50	91
51	93
52	96
53	98
54	102
55	104
56	108
57	110
58	112
59	114
60	120
61	121
62	122

[1, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 17, 18, 20, 21, 24, 26, 28, 30, 31, 32, 33, 36, 38, 39, 40, 42, 44, 48, 50, 54, 56, 57, 60, 62, 63, 65, 68, 72, 73, 74, 78, 80, 82, 84, 85, 90, 91, 93, 96, 98, 102, 104, 108, 110, 112, 114, 120, 121, 122]

cp's OEIS Frontend

A211347 Numbers n such that n = sigma_k(m) for some k >= 1.

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	17
15	18
16	20
17	21
18	24
19	26
20	28
21	30
22	31
23	32
24	33
25	36
26	38
27	39
28	40
29	42
30	44
31	48
32	50
33	54
34	56
35	57
36	60
37	62
38	63
39	65
40	68
41	72
42	73
43	74
44	78
45	80
46	82
47	84
48	85
49	90
50	91
51	93
52	96
53	98
54	102
55	104
56	108
57	110
58	112
59	114
60	120
61	121
62	122

n	a(n)
1	1
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	17
15	18
16	20
17	21
18	24
19	26
20	28
21	30
22	31
23	32
24	33
25	36
26	38
27	39
28	40
29	42
30	44
31	48
32	50
33	54
34	56
35	57
36	60
37	62
38	63
39	65
40	68
41	72
42	73
43	74
44	78
45	80
46	82
47	84
48	85
49	90
50	91
51	93
52	96
53	98
54	102
55	104
56	108
57	110
58	112
59	114
60	120
61	121
62	122

n	a(n)
1	1
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	17
15	18
16	20
17	21
18	24
19	26
20	28
21	30
22	31
23	32
24	33
25	36
26	38
27	39
28	40
29	42
30	44
31	48
32	50
33	54
34	56
35	57
36	60
37	62
38	63
39	65
40	68
41	72
42	73
43	74
44	78
45	80
46	82
47	84
48	85
49	90
50	91
51	93
52	96
53	98
54	102
55	104
56	108
57	110
58	112
59	114
60	120
61	121
62	122