A002024 - cp's OEIS frontend

A002024 k appears k times; a(n) = floor(sqrt(2n) + 1/2).

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

[1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13]

cp's OEIS Frontend

A002024 k appears k times; a(n) = floor(sqrt(2n) + 1/2).

Table of values

List of values

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

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

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