A131470 - cp's OEIS frontend

A131470 a(n)=smallest number that gives a product with the sum of digits of n written in base 2 greater than n.

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

[2, 3, 2, 5, 3, 4, 3, 9, 5, 6, 4, 7, 5, 5, 4, 17, 9, 10, 7, 11, 8, 8, 6, 13, 9, 9, 7, 10, 8, 8, 7, 33, 17, 18, 12, 19, 13, 13, 10, 21, 14, 15, 11, 15, 12, 12, 10, 25, 17, 17, 13, 18, 14, 14, 12, 19, 15, 15, 12, 16, 13, 13, 11, 65, 33, 34, 23]

cp's OEIS Frontend

A131470 a(n)=smallest number that gives a product with the sum of digits of n written in base 2 greater than n.

Table of values

List of values

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

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

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