A145834 - cp's OEIS frontend

A145834 a(n) = difference between the n-th composite number and the sum of its prime factors with repetition.

n	a(n)
1	0
2	1
3	2
4	3
5	3
6	5
7	5
8	7
9	8
10	10
11	11
12	11
13	9
14	15
15	15
16	11
17	18
18	17
19	20
20	22
21	19
22	15
23	23
24	26
25	17
26	23
27	29
28	30
29	29
30	34
31	21
32	37
33	35
34	38
35	31
36	35
37	43
38	39
39	43
40	35
41	27
42	48
43	29
44	50
45	52
46	47
47	50
48	47
49	43
50	56
51	60
52	35
53	62
54	53
55	59
56	60
57	67
58	69
59	39
60	70
61	63
62	41
63	55
64	71
65	77
66	71
67	65
68	59
69	45
70	71
71	83
72	82
73	82

[0, 1, 2, 3, 3, 5, 5, 7, 8, 10, 11, 11, 9, 15, 15, 11, 18, 17, 20, 22, 19, 15, 23, 26, 17, 23, 29, 30, 29, 34, 21, 37, 35, 38, 31, 35, 43, 39, 43, 35, 27, 48, 29, 50, 52, 47, 50, 47, 43, 56, 60, 35, 62, 53, 59, 60, 67, 69, 39, 70, 63, 41, 55, 71, 77, 71, 65, 59, 45, 71, 83, 82, 82]

cp's OEIS Frontend

A145834 a(n) = difference between the n-th composite number and the sum of its prime factors with repetition.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	3
6	5
7	5
8	7
9	8
10	10
11	11
12	11
13	9
14	15
15	15
16	11
17	18
18	17
19	20
20	22
21	19
22	15
23	23
24	26
25	17
26	23
27	29
28	30
29	29
30	34
31	21
32	37
33	35
34	38
35	31
36	35
37	43
38	39
39	43
40	35
41	27
42	48
43	29
44	50
45	52
46	47
47	50
48	47
49	43
50	56
51	60
52	35
53	62
54	53
55	59
56	60
57	67
58	69
59	39
60	70
61	63
62	41
63	55
64	71
65	77
66	71
67	65
68	59
69	45
70	71
71	83
72	82
73	82

n	a(n)
1	0
2	1
3	2
4	3
5	3
6	5
7	5
8	7
9	8
10	10
11	11
12	11
13	9
14	15
15	15
16	11
17	18
18	17
19	20
20	22
21	19
22	15
23	23
24	26
25	17
26	23
27	29
28	30
29	29
30	34
31	21
32	37
33	35
34	38
35	31
36	35
37	43
38	39
39	43
40	35
41	27
42	48
43	29
44	50
45	52
46	47
47	50
48	47
49	43
50	56
51	60
52	35
53	62
54	53
55	59
56	60
57	67
58	69
59	39
60	70
61	63
62	41
63	55
64	71
65	77
66	71
67	65
68	59
69	45
70	71
71	83
72	82
73	82

n	a(n)
1	0
2	1
3	2
4	3
5	3
6	5
7	5
8	7
9	8
10	10
11	11
12	11
13	9
14	15
15	15
16	11
17	18
18	17
19	20
20	22
21	19
22	15
23	23
24	26
25	17
26	23
27	29
28	30
29	29
30	34
31	21
32	37
33	35
34	38
35	31
36	35
37	43
38	39
39	43
40	35
41	27
42	48
43	29
44	50
45	52
46	47
47	50
48	47
49	43
50	56
51	60
52	35
53	62
54	53
55	59
56	60
57	67
58	69
59	39
60	70
61	63
62	41
63	55
64	71
65	77
66	71
67	65
68	59
69	45
70	71
71	83
72	82
73	82