A289507 - cp's OEIS frontend

A289507 The sum of squares of the elements of a finite multiset of positive integers divided by their gcd, the multiset {s_j} being indexed by n = Product_j p_{s_j}, where p_{s_j} is the s_j-th prime.

n	a(n)
1	0
2	1
3	2
4	2
5	3
6	5
7	4
8	3
9	4
10	10
11	5
12	6
13	6
14	17
15	13
16	4
17	7
18	9
19	8
20	11
21	10
22	26
23	9
24	7
25	6
26	37
27	6
28	18
29	10
30	14
31	11
32	5
33	29
34	50
35	25
36	10
37	12
38	65
39	20
40	12
41	13
42	21
43	14
44	27
45	17
46	82
47	15
48	8
49	8
50	19
51	53
52	38
53	16
54	13
55	34
56	19
57	34
58	101
59	17
60	15
61	18
62	122
63	12
64	6
65	15
66	30
67	19
68	51

[0, 1, 2, 2, 3, 5, 4, 3, 4, 10, 5, 6, 6, 17, 13, 4, 7, 9, 8, 11, 10, 26, 9, 7, 6, 37, 6, 18, 10, 14, 11, 5, 29, 50, 25, 10, 12, 65, 20, 12, 13, 21, 14, 27, 17, 82, 15, 8, 8, 19, 53, 38, 16, 13, 34, 19, 34, 101, 17, 15, 18, 122, 12, 6, 15, 30, 19, 51]

cp's OEIS Frontend

A289507 The sum of squares of the elements of a finite multiset of positive integers divided by their gcd, the multiset {s_j} being indexed by n = Product_j p_{s_j}, where p_{s_j} is the s_j-th prime.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	2
5	3
6	5
7	4
8	3
9	4
10	10
11	5
12	6
13	6
14	17
15	13
16	4
17	7
18	9
19	8
20	11
21	10
22	26
23	9
24	7
25	6
26	37
27	6
28	18
29	10
30	14
31	11
32	5
33	29
34	50
35	25
36	10
37	12
38	65
39	20
40	12
41	13
42	21
43	14
44	27
45	17
46	82
47	15
48	8
49	8
50	19
51	53
52	38
53	16
54	13
55	34
56	19
57	34
58	101
59	17
60	15
61	18
62	122
63	12
64	6
65	15
66	30
67	19
68	51

n	a(n)
1	0
2	1
3	2
4	2
5	3
6	5
7	4
8	3
9	4
10	10
11	5
12	6
13	6
14	17
15	13
16	4
17	7
18	9
19	8
20	11
21	10
22	26
23	9
24	7
25	6
26	37
27	6
28	18
29	10
30	14
31	11
32	5
33	29
34	50
35	25
36	10
37	12
38	65
39	20
40	12
41	13
42	21
43	14
44	27
45	17
46	82
47	15
48	8
49	8
50	19
51	53
52	38
53	16
54	13
55	34
56	19
57	34
58	101
59	17
60	15
61	18
62	122
63	12
64	6
65	15
66	30
67	19
68	51

n	a(n)
1	0
2	1
3	2
4	2
5	3
6	5
7	4
8	3
9	4
10	10
11	5
12	6
13	6
14	17
15	13
16	4
17	7
18	9
19	8
20	11
21	10
22	26
23	9
24	7
25	6
26	37
27	6
28	18
29	10
30	14
31	11
32	5
33	29
34	50
35	25
36	10
37	12
38	65
39	20
40	12
41	13
42	21
43	14
44	27
45	17
46	82
47	15
48	8
49	8
50	19
51	53
52	38
53	16
54	13
55	34
56	19
57	34
58	101
59	17
60	15
61	18
62	122
63	12
64	6
65	15
66	30
67	19
68	51