A238598 - cp's OEIS frontend

A238598 Largest integer k such that n >= k^2-k-1 = A165900(k).

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	3
7	3
8	3
9	3
10	3
11	4
12	4
13	4
14	4
15	4
16	4
17	4
18	4
19	5
20	5
21	5
22	5
23	5
24	5
25	5
26	5
27	5
28	5
29	6
30	6
31	6
32	6
33	6
34	6
35	6
36	6
37	6
38	6
39	6
40	6
41	7
42	7
43	7
44	7
45	7
46	7
47	7
48	7
49	7
50	7
51	7
52	7
53	7
54	7
55	8
56	8
57	8
58	8
59	8
60	8
61	8
62	8
63	8
64	8
65	8
66	8
67	8
68	8
69	8
70	8
71	9
72	9
73	9
74	9
75	9
76	9
77	9
78	9
79	9
80	9
81	9
82	9
83	9
84	9
85	9
86	9

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

cp's OEIS Frontend

A238598 Largest integer k such that n >= k^2-k-1 = A165900(k).

Table of values

List of values

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	3
7	3
8	3
9	3
10	3
11	4
12	4
13	4
14	4
15	4
16	4
17	4
18	4
19	5
20	5
21	5
22	5
23	5
24	5
25	5
26	5
27	5
28	5
29	6
30	6
31	6
32	6
33	6
34	6
35	6
36	6
37	6
38	6
39	6
40	6
41	7
42	7
43	7
44	7
45	7
46	7
47	7
48	7
49	7
50	7
51	7
52	7
53	7
54	7
55	8
56	8
57	8
58	8
59	8
60	8
61	8
62	8
63	8
64	8
65	8
66	8
67	8
68	8
69	8
70	8
71	9
72	9
73	9
74	9
75	9
76	9
77	9
78	9
79	9
80	9
81	9
82	9
83	9
84	9
85	9
86	9

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	3
7	3
8	3
9	3
10	3
11	4
12	4
13	4
14	4
15	4
16	4
17	4
18	4
19	5
20	5
21	5
22	5
23	5
24	5
25	5
26	5
27	5
28	5
29	6
30	6
31	6
32	6
33	6
34	6
35	6
36	6
37	6
38	6
39	6
40	6
41	7
42	7
43	7
44	7
45	7
46	7
47	7
48	7
49	7
50	7
51	7
52	7
53	7
54	7
55	8
56	8
57	8
58	8
59	8
60	8
61	8
62	8
63	8
64	8
65	8
66	8
67	8
68	8
69	8
70	8
71	9
72	9
73	9
74	9
75	9
76	9
77	9
78	9
79	9
80	9
81	9
82	9
83	9
84	9
85	9
86	9

n	a(n)
0	1
1	1
2	2
3	2
4	2
5	3
6	3
7	3
8	3
9	3
10	3
11	4
12	4
13	4
14	4
15	4
16	4
17	4
18	4
19	5
20	5
21	5
22	5
23	5
24	5
25	5
26	5
27	5
28	5
29	6
30	6
31	6
32	6
33	6
34	6
35	6
36	6
37	6
38	6
39	6
40	6
41	7
42	7
43	7
44	7
45	7
46	7
47	7
48	7
49	7
50	7
51	7
52	7
53	7
54	7
55	8
56	8
57	8
58	8
59	8
60	8
61	8
62	8
63	8
64	8
65	8
66	8
67	8
68	8
69	8
70	8
71	9
72	9
73	9
74	9
75	9
76	9
77	9
78	9
79	9
80	9
81	9
82	9
83	9
84	9
85	9
86	9