A071322 - cp's OEIS frontend

A071322 Alternating sum of all prime factors of n; primes nonincreasing, starting with the largest prime factor: A006530(n).

n	a(n)
1	0
2	2
3	3
4	0
5	5
6	1
7	7
8	2
9	0
10	3
11	11
12	3
13	13
14	5
15	2
16	0
17	17
18	2
19	19
20	5
21	4
22	9
23	23
24	1
25	0
26	11
27	3
28	7
29	29
30	4
31	31
32	2
33	8
34	15
35	2
36	0
37	37
38	17
39	10
40	3
41	41
42	6
43	43
44	11
45	5
46	21
47	47
48	3
49	0
50	2
51	14
52	13
53	53
54	1
55	6
56	5
57	16
58	27
59	59
60	2
61	61
62	29
63	7
64	0
65	8
66	10
67	67
68	17
69	20
70	4
71	71
72	2
73	73
74	35

[0, 2, 3, 0, 5, 1, 7, 2, 0, 3, 11, 3, 13, 5, 2, 0, 17, 2, 19, 5, 4, 9, 23, 1, 0, 11, 3, 7, 29, 4, 31, 2, 8, 15, 2, 0, 37, 17, 10, 3, 41, 6, 43, 11, 5, 21, 47, 3, 0, 2, 14, 13, 53, 1, 6, 5, 16, 27, 59, 2, 61, 29, 7, 0, 8, 10, 67, 17, 20, 4, 71, 2, 73, 35]

cp's OEIS Frontend

A071322 Alternating sum of all prime factors of n; primes nonincreasing, starting with the largest prime factor: A006530(n).

Table of values

List of values

n	a(n)
1	0
2	2
3	3
4	0
5	5
6	1
7	7
8	2
9	0
10	3
11	11
12	3
13	13
14	5
15	2
16	0
17	17
18	2
19	19
20	5
21	4
22	9
23	23
24	1
25	0
26	11
27	3
28	7
29	29
30	4
31	31
32	2
33	8
34	15
35	2
36	0
37	37
38	17
39	10
40	3
41	41
42	6
43	43
44	11
45	5
46	21
47	47
48	3
49	0
50	2
51	14
52	13
53	53
54	1
55	6
56	5
57	16
58	27
59	59
60	2
61	61
62	29
63	7
64	0
65	8
66	10
67	67
68	17
69	20
70	4
71	71
72	2
73	73
74	35

n	a(n)
1	0
2	2
3	3
4	0
5	5
6	1
7	7
8	2
9	0
10	3
11	11
12	3
13	13
14	5
15	2
16	0
17	17
18	2
19	19
20	5
21	4
22	9
23	23
24	1
25	0
26	11
27	3
28	7
29	29
30	4
31	31
32	2
33	8
34	15
35	2
36	0
37	37
38	17
39	10
40	3
41	41
42	6
43	43
44	11
45	5
46	21
47	47
48	3
49	0
50	2
51	14
52	13
53	53
54	1
55	6
56	5
57	16
58	27
59	59
60	2
61	61
62	29
63	7
64	0
65	8
66	10
67	67
68	17
69	20
70	4
71	71
72	2
73	73
74	35

n	a(n)
1	0
2	2
3	3
4	0
5	5
6	1
7	7
8	2
9	0
10	3
11	11
12	3
13	13
14	5
15	2
16	0
17	17
18	2
19	19
20	5
21	4
22	9
23	23
24	1
25	0
26	11
27	3
28	7
29	29
30	4
31	31
32	2
33	8
34	15
35	2
36	0
37	37
38	17
39	10
40	3
41	41
42	6
43	43
44	11
45	5
46	21
47	47
48	3
49	0
50	2
51	14
52	13
53	53
54	1
55	6
56	5
57	16
58	27
59	59
60	2
61	61
62	29
63	7
64	0
65	8
66	10
67	67
68	17
69	20
70	4
71	71
72	2
73	73
74	35