A377929 - cp's OEIS frontend

A377929 Quasi-practical numbers: positive integers m such that every k <= sigma(m)-m is a sum of distinct proper divisors of m.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	11
10	12
11	13
12	16
13	17
14	18
15	19
16	20
17	23
18	24
19	28
20	29
21	30
22	31
23	32
24	36
25	37
26	40
27	41
28	42
29	43
30	47
31	48
32	53
33	54
34	56
35	59
36	60
37	61
38	64
39	66
40	67
41	71
42	72
43	73
44	78
45	79
46	80
47	83
48	84
49	88
50	89
51	90
52	96
53	97
54	100
55	101
56	103
57	104
58	107
59	108
60	109
61	112
62	113
63	120
64	126
65	127
66	128

[1, 2, 3, 4, 5, 6, 7, 8, 11, 12, 13, 16, 17, 18, 19, 20, 23, 24, 28, 29, 30, 31, 32, 36, 37, 40, 41, 42, 43, 47, 48, 53, 54, 56, 59, 60, 61, 64, 66, 67, 71, 72, 73, 78, 79, 80, 83, 84, 88, 89, 90, 96, 97, 100, 101, 103, 104, 107, 108, 109, 112, 113, 120, 126, 127, 128]

cp's OEIS Frontend

A377929 Quasi-practical numbers: positive integers m such that every k <= sigma(m)-m is a sum of distinct proper divisors of m.

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	11
10	12
11	13
12	16
13	17
14	18
15	19
16	20
17	23
18	24
19	28
20	29
21	30
22	31
23	32
24	36
25	37
26	40
27	41
28	42
29	43
30	47
31	48
32	53
33	54
34	56
35	59
36	60
37	61
38	64
39	66
40	67
41	71
42	72
43	73
44	78
45	79
46	80
47	83
48	84
49	88
50	89
51	90
52	96
53	97
54	100
55	101
56	103
57	104
58	107
59	108
60	109
61	112
62	113
63	120
64	126
65	127
66	128

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	11
10	12
11	13
12	16
13	17
14	18
15	19
16	20
17	23
18	24
19	28
20	29
21	30
22	31
23	32
24	36
25	37
26	40
27	41
28	42
29	43
30	47
31	48
32	53
33	54
34	56
35	59
36	60
37	61
38	64
39	66
40	67
41	71
42	72
43	73
44	78
45	79
46	80
47	83
48	84
49	88
50	89
51	90
52	96
53	97
54	100
55	101
56	103
57	104
58	107
59	108
60	109
61	112
62	113
63	120
64	126
65	127
66	128

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	11
10	12
11	13
12	16
13	17
14	18
15	19
16	20
17	23
18	24
19	28
20	29
21	30
22	31
23	32
24	36
25	37
26	40
27	41
28	42
29	43
30	47
31	48
32	53
33	54
34	56
35	59
36	60
37	61
38	64
39	66
40	67
41	71
42	72
43	73
44	78
45	79
46	80
47	83
48	84
49	88
50	89
51	90
52	96
53	97
54	100
55	101
56	103
57	104
58	107
59	108
60	109
61	112
62	113
63	120
64	126
65	127
66	128