A119790 - cp's OEIS frontend

A119790 a(n) is the sum of the positive integers each of which is <= n and is divisible by exactly one prime dividing n (but is coprime to every other prime dividing n). (a(1) = 1).

n	a(n)
1	1
2	2
3	3
4	6
5	5
6	9
7	7
8	20
9	18
10	25
11	11
12	36
13	13
14	49
15	45
16	72
17	17
18	81
19	19
20	100
21	84
22	121
23	23
24	144
25	75
26	169
27	135
28	196
29	29
30	210
31	31
32	272
33	198
34	289
35	175
36	324
37	37
38	361
39	273
40	400
41	41
42	420
43	43
44	484
45	405
46	529
47	47
48	576
49	196
50	625
51	459
52	676
53	53
54	729
55	385
56	784
57	570
58	841
59	59
60	840
61	61
62	961

[1, 2, 3, 6, 5, 9, 7, 20, 18, 25, 11, 36, 13, 49, 45, 72, 17, 81, 19, 100, 84, 121, 23, 144, 75, 169, 135, 196, 29, 210, 31, 272, 198, 289, 175, 324, 37, 361, 273, 400, 41, 420, 43, 484, 405, 529, 47, 576, 196, 625, 459, 676, 53, 729, 385, 784, 570, 841, 59, 840, 61, 961]

cp's OEIS Frontend

A119790 a(n) is the sum of the positive integers each of which is <= n and is divisible by exactly one prime dividing n (but is coprime to every other prime dividing n). (a(1) = 1).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	6
5	5
6	9
7	7
8	20
9	18
10	25
11	11
12	36
13	13
14	49
15	45
16	72
17	17
18	81
19	19
20	100
21	84
22	121
23	23
24	144
25	75
26	169
27	135
28	196
29	29
30	210
31	31
32	272
33	198
34	289
35	175
36	324
37	37
38	361
39	273
40	400
41	41
42	420
43	43
44	484
45	405
46	529
47	47
48	576
49	196
50	625
51	459
52	676
53	53
54	729
55	385
56	784
57	570
58	841
59	59
60	840
61	61
62	961

n	a(n)
1	1
2	2
3	3
4	6
5	5
6	9
7	7
8	20
9	18
10	25
11	11
12	36
13	13
14	49
15	45
16	72
17	17
18	81
19	19
20	100
21	84
22	121
23	23
24	144
25	75
26	169
27	135
28	196
29	29
30	210
31	31
32	272
33	198
34	289
35	175
36	324
37	37
38	361
39	273
40	400
41	41
42	420
43	43
44	484
45	405
46	529
47	47
48	576
49	196
50	625
51	459
52	676
53	53
54	729
55	385
56	784
57	570
58	841
59	59
60	840
61	61
62	961

n	a(n)
1	1
2	2
3	3
4	6
5	5
6	9
7	7
8	20
9	18
10	25
11	11
12	36
13	13
14	49
15	45
16	72
17	17
18	81
19	19
20	100
21	84
22	121
23	23
24	144
25	75
26	169
27	135
28	196
29	29
30	210
31	31
32	272
33	198
34	289
35	175
36	324
37	37
38	361
39	273
40	400
41	41
42	420
43	43
44	484
45	405
46	529
47	47
48	576
49	196
50	625
51	459
52	676
53	53
54	729
55	385
56	784
57	570
58	841
59	59
60	840
61	61
62	961