A036288 - cp's OEIS frontend

A036288 a(n) = 1 + integer log of n: if the prime factorization of n is n = Product (p_j^k_j) then a(n) = 1 + Sum (p_j * k_j) (cf. A001414).

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

[1, 3, 4, 5, 6, 6, 8, 7, 7, 8, 12, 8, 14, 10, 9, 9, 18, 9, 20, 10, 11, 14, 24, 10, 11, 16, 10, 12, 30, 11, 32, 11, 15, 20, 13, 11, 38, 22, 17, 12, 42, 13, 44, 16, 12, 26, 48, 12, 15, 13, 21, 18, 54, 12, 17, 14, 23, 32, 60, 13, 62, 34, 14, 13, 19, 17, 68, 22]

cp's OEIS Frontend

A036288 a(n) = 1 + integer log of n: if the prime factorization of n is n = Product (p_j^k_j) then a(n) = 1 + Sum (p_j * k_j) (cf. A001414).

Table of values

List of values

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

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

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