A382477 - cp's OEIS frontend

A382477 If n = Product (p_j^k_j) then a(n) = -Sum ((-1)^k_j * k_j * p_j).

n	a(n)
1	0
2	2
3	3
4	-4
5	5
6	5
7	7
8	6
9	-6
10	7
11	11
12	-1
13	13
14	9
15	8
16	-8
17	17
18	-4
19	19
20	1
21	10
22	13
23	23
24	9
25	-10
26	15
27	9
28	3
29	29
30	10
31	31
32	10
33	14
34	19
35	12
36	-10
37	37
38	21
39	16
40	11
41	41
42	12
43	43
44	7
45	-1
46	25
47	47
48	-5
49	-14
50	-8
51	20
52	9
53	53
54	11
55	16
56	13
57	22
58	31
59	59
60	4
61	61
62	33
63	1
64	-12
65	18
66	16
67	67
68	13
69	26
70	14
71	71
72	0
73	73
74	39
75	-7

[0, 2, 3, -4, 5, 5, 7, 6, -6, 7, 11, -1, 13, 9, 8, -8, 17, -4, 19, 1, 10, 13, 23, 9, -10, 15, 9, 3, 29, 10, 31, 10, 14, 19, 12, -10, 37, 21, 16, 11, 41, 12, 43, 7, -1, 25, 47, -5, -14, -8, 20, 9, 53, 11, 16, 13, 22, 31, 59, 4, 61, 33, 1, -12, 18, 16, 67, 13, 26, 14, 71, 0, 73, 39, -7]

cp's OEIS Frontend

A382477 If n = Product (p_j^k_j) then a(n) = -Sum ((-1)^k_j * k_j * p_j).

Table of values

List of values

n	a(n)
1	0
2	2
3	3
4	-4
5	5
6	5
7	7
8	6
9	-6
10	7
11	11
12	-1
13	13
14	9
15	8
16	-8
17	17
18	-4
19	19
20	1
21	10
22	13
23	23
24	9
25	-10
26	15
27	9
28	3
29	29
30	10
31	31
32	10
33	14
34	19
35	12
36	-10
37	37
38	21
39	16
40	11
41	41
42	12
43	43
44	7
45	-1
46	25
47	47
48	-5
49	-14
50	-8
51	20
52	9
53	53
54	11
55	16
56	13
57	22
58	31
59	59
60	4
61	61
62	33
63	1
64	-12
65	18
66	16
67	67
68	13
69	26
70	14
71	71
72	0
73	73
74	39
75	-7

n	a(n)
1	0
2	2
3	3
4	-4
5	5
6	5
7	7
8	6
9	-6
10	7
11	11
12	-1
13	13
14	9
15	8
16	-8
17	17
18	-4
19	19
20	1
21	10
22	13
23	23
24	9
25	-10
26	15
27	9
28	3
29	29
30	10
31	31
32	10
33	14
34	19
35	12
36	-10
37	37
38	21
39	16
40	11
41	41
42	12
43	43
44	7
45	-1
46	25
47	47
48	-5
49	-14
50	-8
51	20
52	9
53	53
54	11
55	16
56	13
57	22
58	31
59	59
60	4
61	61
62	33
63	1
64	-12
65	18
66	16
67	67
68	13
69	26
70	14
71	71
72	0
73	73
74	39
75	-7

n	a(n)
1	0
2	2
3	3
4	-4
5	5
6	5
7	7
8	6
9	-6
10	7
11	11
12	-1
13	13
14	9
15	8
16	-8
17	17
18	-4
19	19
20	1
21	10
22	13
23	23
24	9
25	-10
26	15
27	9
28	3
29	29
30	10
31	31
32	10
33	14
34	19
35	12
36	-10
37	37
38	21
39	16
40	11
41	41
42	12
43	43
44	7
45	-1
46	25
47	47
48	-5
49	-14
50	-8
51	20
52	9
53	53
54	11
55	16
56	13
57	22
58	31
59	59
60	4
61	61
62	33
63	1
64	-12
65	18
66	16
67	67
68	13
69	26
70	14
71	71
72	0
73	73
74	39
75	-7