A197702 - cp's OEIS frontend

A197702 Smallest positive integer k such that n = +-1 +-3 +-... +-(2k-1) for some choice of +'s and -'s.

n	a(n)
1	1
2	2
3	3
4	2
5	5
6	4
7	3
8	4
9	3
10	4
11	5
12	6
13	5
14	4
15	5
16	4
17	5
18	6
19	5
20	6
21	7
22	6
23	5
24	6
25	5
26	6
27	7
28	6
29	7
30	6
31	7
32	8
33	7
34	6
35	7
36	6
37	7
38	8
39	7
40	8
41	7
42	8
43	7
44	8
45	9
46	8
47	7
48	8
49	7
50	8
51	9
52	8
53	9
54	8
55	9
56	8
57	9
58	8
59	9
60	10
61	9
62	8
63	9
64	8
65	9
66	10
67	9
68	10
69	9
70	10
71	9
72	10
73	9
74	10
75	9
76	10
77	11
78	10
79	9
80	10
81	9
82	10
83	11
84	10
85	11
86	10
87	11
88	10
89	11
90	10
91	11
92	10
93	11
94	10
95	11
96	12
97	11
98	10
99	11
100	10

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

cp's OEIS Frontend

A197702 Smallest positive integer k such that n = +-1 +-3 +-... +-(2k-1) for some choice of +'s and -'s.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	2
5	5
6	4
7	3
8	4
9	3
10	4
11	5
12	6
13	5
14	4
15	5
16	4
17	5
18	6
19	5
20	6
21	7
22	6
23	5
24	6
25	5
26	6
27	7
28	6
29	7
30	6
31	7
32	8
33	7
34	6
35	7
36	6
37	7
38	8
39	7
40	8
41	7
42	8
43	7
44	8
45	9
46	8
47	7
48	8
49	7
50	8
51	9
52	8
53	9
54	8
55	9
56	8
57	9
58	8
59	9
60	10
61	9
62	8
63	9
64	8
65	9
66	10
67	9
68	10
69	9
70	10
71	9
72	10
73	9
74	10
75	9
76	10
77	11
78	10
79	9
80	10
81	9
82	10
83	11
84	10
85	11
86	10
87	11
88	10
89	11
90	10
91	11
92	10
93	11
94	10
95	11
96	12
97	11
98	10
99	11
100	10

n	a(n)
1	1
2	2
3	3
4	2
5	5
6	4
7	3
8	4
9	3
10	4
11	5
12	6
13	5
14	4
15	5
16	4
17	5
18	6
19	5
20	6
21	7
22	6
23	5
24	6
25	5
26	6
27	7
28	6
29	7
30	6
31	7
32	8
33	7
34	6
35	7
36	6
37	7
38	8
39	7
40	8
41	7
42	8
43	7
44	8
45	9
46	8
47	7
48	8
49	7
50	8
51	9
52	8
53	9
54	8
55	9
56	8
57	9
58	8
59	9
60	10
61	9
62	8
63	9
64	8
65	9
66	10
67	9
68	10
69	9
70	10
71	9
72	10
73	9
74	10
75	9
76	10
77	11
78	10
79	9
80	10
81	9
82	10
83	11
84	10
85	11
86	10
87	11
88	10
89	11
90	10
91	11
92	10
93	11
94	10
95	11
96	12
97	11
98	10
99	11
100	10

n	a(n)
1	1
2	2
3	3
4	2
5	5
6	4
7	3
8	4
9	3
10	4
11	5
12	6
13	5
14	4
15	5
16	4
17	5
18	6
19	5
20	6
21	7
22	6
23	5
24	6
25	5
26	6
27	7
28	6
29	7
30	6
31	7
32	8
33	7
34	6
35	7
36	6
37	7
38	8
39	7
40	8
41	7
42	8
43	7
44	8
45	9
46	8
47	7
48	8
49	7
50	8
51	9
52	8
53	9
54	8
55	9
56	8
57	9
58	8
59	9
60	10
61	9
62	8
63	9
64	8
65	9
66	10
67	9
68	10
69	9
70	10
71	9
72	10
73	9
74	10
75	9
76	10
77	11
78	10
79	9
80	10
81	9
82	10
83	11
84	10
85	11
86	10
87	11
88	10
89	11
90	10
91	11
92	10
93	11
94	10
95	11
96	12
97	11
98	10
99	11
100	10