A132913 - cp's OEIS frontend

A132913 a(n) = ceiling(sqrt(n) + n^(1/3)).

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

[2, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13]

cp's OEIS Frontend

A132913 a(n) = ceiling(sqrt(n) + n^(1/3)).

Table of values

List of values

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

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

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