A176707 - cp's OEIS frontend

A176707 Sum of digits of all distinct prime factors of n-th semiprime.

n	a(n)
1	2
2	5
3	3
4	7
5	9
6	8
7	10
8	4
9	5
10	6
11	5
12	10
13	12
14	12
15	7
16	7
17	7
18	11
19	7
20	13
21	13
22	6
23	9
24	8
25	12
26	9
27	7
28	13
29	9
30	14
31	11
32	7
33	13
34	15
35	10
36	13
37	10
38	16
39	15
40	2
41	9
42	8
43	10
44	17
45	15
46	14
47	10
48	6
49	16
50	12
51	9
52	18
53	11
54	12
55	13
56	4
57	17
58	19
59	10
60	15
61	10
62	18
63	16
64	4
65	18
66	10
67	6
68	12
69	11
70	10
71	12
72	11
73	12
74	13
75	12
76	7
77	16
78	19
79	14
80	14
81	7

[2, 5, 3, 7, 9, 8, 10, 4, 5, 6, 5, 10, 12, 12, 7, 7, 7, 11, 7, 13, 13, 6, 9, 8, 12, 9, 7, 13, 9, 14, 11, 7, 13, 15, 10, 13, 10, 16, 15, 2, 9, 8, 10, 17, 15, 14, 10, 6, 16, 12, 9, 18, 11, 12, 13, 4, 17, 19, 10, 15, 10, 18, 16, 4, 18, 10, 6, 12, 11, 10, 12, 11, 12, 13, 12, 7, 16, 19, 14, 14, 7]

cp's OEIS Frontend

A176707 Sum of digits of all distinct prime factors of n-th semiprime.

Table of values

List of values

n	a(n)
1	2
2	5
3	3
4	7
5	9
6	8
7	10
8	4
9	5
10	6
11	5
12	10
13	12
14	12
15	7
16	7
17	7
18	11
19	7
20	13
21	13
22	6
23	9
24	8
25	12
26	9
27	7
28	13
29	9
30	14
31	11
32	7
33	13
34	15
35	10
36	13
37	10
38	16
39	15
40	2
41	9
42	8
43	10
44	17
45	15
46	14
47	10
48	6
49	16
50	12
51	9
52	18
53	11
54	12
55	13
56	4
57	17
58	19
59	10
60	15
61	10
62	18
63	16
64	4
65	18
66	10
67	6
68	12
69	11
70	10
71	12
72	11
73	12
74	13
75	12
76	7
77	16
78	19
79	14
80	14
81	7

n	a(n)
1	2
2	5
3	3
4	7
5	9
6	8
7	10
8	4
9	5
10	6
11	5
12	10
13	12
14	12
15	7
16	7
17	7
18	11
19	7
20	13
21	13
22	6
23	9
24	8
25	12
26	9
27	7
28	13
29	9
30	14
31	11
32	7
33	13
34	15
35	10
36	13
37	10
38	16
39	15
40	2
41	9
42	8
43	10
44	17
45	15
46	14
47	10
48	6
49	16
50	12
51	9
52	18
53	11
54	12
55	13
56	4
57	17
58	19
59	10
60	15
61	10
62	18
63	16
64	4
65	18
66	10
67	6
68	12
69	11
70	10
71	12
72	11
73	12
74	13
75	12
76	7
77	16
78	19
79	14
80	14
81	7

n	a(n)
1	2
2	5
3	3
4	7
5	9
6	8
7	10
8	4
9	5
10	6
11	5
12	10
13	12
14	12
15	7
16	7
17	7
18	11
19	7
20	13
21	13
22	6
23	9
24	8
25	12
26	9
27	7
28	13
29	9
30	14
31	11
32	7
33	13
34	15
35	10
36	13
37	10
38	16
39	15
40	2
41	9
42	8
43	10
44	17
45	15
46	14
47	10
48	6
49	16
50	12
51	9
52	18
53	11
54	12
55	13
56	4
57	17
58	19
59	10
60	15
61	10
62	18
63	16
64	4
65	18
66	10
67	6
68	12
69	11
70	10
71	12
72	11
73	12
74	13
75	12
76	7
77	16
78	19
79	14
80	14
81	7