A053405 - cp's OEIS frontend

A053405 Definition: A kara B = C, where C is the least nonnegative integer such that C * B >= A and C * (B-1) < A. a(n) is the smallest k such that n kara k is undefined.

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

[3, 4, 4, 5, 5, 4, 6, 5, 5, 6, 6, 6, 5, 7, 7, 6, 6, 8, 7, 7, 7, 6, 8, 8, 8, 7, 7, 9, 9, 8, 8, 8, 7, 9, 9, 9, 9, 8, 8, 10, 10, 10, 9, 9, 9, 8, 11, 10, 10, 10, 10, 9, 9, 11, 11, 11, 11, 10, 10, 10, 9, 12, 12, 11, 11, 11, 11, 10, 10, 12, 12, 12, 12, 12, 11, 11, 11, 10, 13, 13, 13, 12, 12, 12, 12]

cp's OEIS Frontend

A053405 Definition: A kara B = C, where C is the least nonnegative integer such that C * B >= A and C * (B-1) < A. a(n) is the smallest k such that n kara k is undefined.

Table of values

List of values

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

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

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