A091334 - cp's OEIS frontend

A091334 Number of 1's required to build n using +, -, *, ^, and parentheses.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	5
7	6
8	5
9	5
10	6
11	7
12	7
13	8
14	8
15	7
16	6
17	7
18	7
19	8
20	8
21	9
22	9
23	9
24	8
25	7
26	7
27	6
28	7
29	8
30	9
31	8
32	7
33	8
34	9
35	8
36	7
37	8
38	9
39	10
40	10
41	11
42	11
43	12
44	11
45	10
46	11
47	10
48	9
49	8
50	9
51	10
52	9
53	9
54	8
55	9
56	9
57	10
58	10
59	11
60	11
61	10
62	9
63	8
64	7
65	8
66	9
67	10
68	11
69	11
70	10
71	10
72	9
73	10
74	10
75	10
76	11
77	11
78	10
79	9
80	8
81	7
82	8
83	9
84	10
85	11
86	12
87	11
88	12
89	12

[1, 2, 3, 4, 5, 5, 6, 5, 5, 6, 7, 7, 8, 8, 7, 6, 7, 7, 8, 8, 9, 9, 9, 8, 7, 7, 6, 7, 8, 9, 8, 7, 8, 9, 8, 7, 8, 9, 10, 10, 11, 11, 12, 11, 10, 11, 10, 9, 8, 9, 10, 9, 9, 8, 9, 9, 10, 10, 11, 11, 10, 9, 8, 7, 8, 9, 10, 11, 11, 10, 10, 9, 10, 10, 10, 11, 11, 10, 9, 8, 7, 8, 9, 10, 11, 12, 11, 12, 12]

cp's OEIS Frontend

A091334 Number of 1's required to build n using +, -, *, ^, and parentheses.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	5
7	6
8	5
9	5
10	6
11	7
12	7
13	8
14	8
15	7
16	6
17	7
18	7
19	8
20	8
21	9
22	9
23	9
24	8
25	7
26	7
27	6
28	7
29	8
30	9
31	8
32	7
33	8
34	9
35	8
36	7
37	8
38	9
39	10
40	10
41	11
42	11
43	12
44	11
45	10
46	11
47	10
48	9
49	8
50	9
51	10
52	9
53	9
54	8
55	9
56	9
57	10
58	10
59	11
60	11
61	10
62	9
63	8
64	7
65	8
66	9
67	10
68	11
69	11
70	10
71	10
72	9
73	10
74	10
75	10
76	11
77	11
78	10
79	9
80	8
81	7
82	8
83	9
84	10
85	11
86	12
87	11
88	12
89	12

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	5
7	6
8	5
9	5
10	6
11	7
12	7
13	8
14	8
15	7
16	6
17	7
18	7
19	8
20	8
21	9
22	9
23	9
24	8
25	7
26	7
27	6
28	7
29	8
30	9
31	8
32	7
33	8
34	9
35	8
36	7
37	8
38	9
39	10
40	10
41	11
42	11
43	12
44	11
45	10
46	11
47	10
48	9
49	8
50	9
51	10
52	9
53	9
54	8
55	9
56	9
57	10
58	10
59	11
60	11
61	10
62	9
63	8
64	7
65	8
66	9
67	10
68	11
69	11
70	10
71	10
72	9
73	10
74	10
75	10
76	11
77	11
78	10
79	9
80	8
81	7
82	8
83	9
84	10
85	11
86	12
87	11
88	12
89	12

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	5
7	6
8	5
9	5
10	6
11	7
12	7
13	8
14	8
15	7
16	6
17	7
18	7
19	8
20	8
21	9
22	9
23	9
24	8
25	7
26	7
27	6
28	7
29	8
30	9
31	8
32	7
33	8
34	9
35	8
36	7
37	8
38	9
39	10
40	10
41	11
42	11
43	12
44	11
45	10
46	11
47	10
48	9
49	8
50	9
51	10
52	9
53	9
54	8
55	9
56	9
57	10
58	10
59	11
60	11
61	10
62	9
63	8
64	7
65	8
66	9
67	10
68	11
69	11
70	10
71	10
72	9
73	10
74	10
75	10
76	11
77	11
78	10
79	9
80	8
81	7
82	8
83	9
84	10
85	11
86	12
87	11
88	12
89	12