A307136 - cp's OEIS frontend

A307136 a(n) = ceiling(2*sqrt(A000037(n))), n >= 1.

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

[3, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20]

cp's OEIS Frontend

A307136 a(n) = ceiling(2*sqrt(A000037(n))), n >= 1.

Table of values

List of values

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

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

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