A107463 - cp's OEIS frontend

A107463 a(0)=0, a(n)=1 if n is 1 or is a prime, otherwise sum of prime factors of n with multiplicity.

n	a(n)
0	0
1	1
2	1
3	1
4	4
5	1
6	5
7	1
8	6
9	6
10	7
11	1
12	7
13	1
14	9
15	8
16	8
17	1
18	8
19	1
20	9
21	10
22	13
23	1
24	9
25	10
26	15
27	9
28	11
29	1
30	10
31	1
32	10
33	14
34	19
35	12
36	10
37	1
38	21
39	16
40	11
41	1
42	12
43	1
44	15
45	11
46	25
47	1
48	11
49	14
50	12
51	20
52	17
53	1
54	11
55	16
56	13
57	22
58	31
59	1
60	12
61	1
62	33
63	13
64	12
65	18
66	16
67	1
68	21
69	26
70	14
71	1
72	12
73	1
74	39
75	13
76	23
77	18
78	18
79	1
80	13
81	12

[0, 1, 1, 1, 4, 1, 5, 1, 6, 6, 7, 1, 7, 1, 9, 8, 8, 1, 8, 1, 9, 10, 13, 1, 9, 10, 15, 9, 11, 1, 10, 1, 10, 14, 19, 12, 10, 1, 21, 16, 11, 1, 12, 1, 15, 11, 25, 1, 11, 14, 12, 20, 17, 1, 11, 16, 13, 22, 31, 1, 12, 1, 33, 13, 12, 18, 16, 1, 21, 26, 14, 1, 12, 1, 39, 13, 23, 18, 18, 1, 13, 12]

cp's OEIS Frontend

A107463 a(0)=0, a(n)=1 if n is 1 or is a prime, otherwise sum of prime factors of n with multiplicity.

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	1
4	4
5	1
6	5
7	1
8	6
9	6
10	7
11	1
12	7
13	1
14	9
15	8
16	8
17	1
18	8
19	1
20	9
21	10
22	13
23	1
24	9
25	10
26	15
27	9
28	11
29	1
30	10
31	1
32	10
33	14
34	19
35	12
36	10
37	1
38	21
39	16
40	11
41	1
42	12
43	1
44	15
45	11
46	25
47	1
48	11
49	14
50	12
51	20
52	17
53	1
54	11
55	16
56	13
57	22
58	31
59	1
60	12
61	1
62	33
63	13
64	12
65	18
66	16
67	1
68	21
69	26
70	14
71	1
72	12
73	1
74	39
75	13
76	23
77	18
78	18
79	1
80	13
81	12

n	a(n)
0	0
1	1
2	1
3	1
4	4
5	1
6	5
7	1
8	6
9	6
10	7
11	1
12	7
13	1
14	9
15	8
16	8
17	1
18	8
19	1
20	9
21	10
22	13
23	1
24	9
25	10
26	15
27	9
28	11
29	1
30	10
31	1
32	10
33	14
34	19
35	12
36	10
37	1
38	21
39	16
40	11
41	1
42	12
43	1
44	15
45	11
46	25
47	1
48	11
49	14
50	12
51	20
52	17
53	1
54	11
55	16
56	13
57	22
58	31
59	1
60	12
61	1
62	33
63	13
64	12
65	18
66	16
67	1
68	21
69	26
70	14
71	1
72	12
73	1
74	39
75	13
76	23
77	18
78	18
79	1
80	13
81	12

n	a(n)
0	0
1	1
2	1
3	1
4	4
5	1
6	5
7	1
8	6
9	6
10	7
11	1
12	7
13	1
14	9
15	8
16	8
17	1
18	8
19	1
20	9
21	10
22	13
23	1
24	9
25	10
26	15
27	9
28	11
29	1
30	10
31	1
32	10
33	14
34	19
35	12
36	10
37	1
38	21
39	16
40	11
41	1
42	12
43	1
44	15
45	11
46	25
47	1
48	11
49	14
50	12
51	20
52	17
53	1
54	11
55	16
56	13
57	22
58	31
59	1
60	12
61	1
62	33
63	13
64	12
65	18
66	16
67	1
68	21
69	26
70	14
71	1
72	12
73	1
74	39
75	13
76	23
77	18
78	18
79	1
80	13
81	12