A100617 - cp's OEIS frontend

A100617 There are n people in a room. The first half (i.e., floor(n/2)) of them leave, then 1/3 (i.e., floor of 1/3) of those remaining leave, then 1/4, then 1/5, etc.; sequence gives number who remain at the end.

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	2
7	3
8	3
9	3
10	3
11	3
12	3
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	6
28	6
29	6
30	6
31	6
32	6
33	6
34	6
35	6
36	6
37	6
38	6
39	7
40	7
41	7
42	7
43	7
44	7
45	7
46	7
47	7
48	7
49	8
50	8
51	8
52	8
53	8
54	8
55	8
56	8
57	8
58	8
59	8
60	8
61	8
62	8
63	9
64	9
65	9
66	9
67	9
68	9
69	9
70	9
71	9
72	9
73	9
74	9
75	9
76	9
77	9
78	9
79	10
80	10
81	10
82	10
83	10
84	10
85	10
86	10
87	10
88	10
89	10
90	10
91	11
92	11
93	11
94	11
95	11
96	11

[1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 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, 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, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11]

cp's OEIS Frontend

A100617 There are n people in a room. The first half (i.e., floor(n/2)) of them leave, then 1/3 (i.e., floor of 1/3) of those remaining leave, then 1/4, then 1/5, etc.; sequence gives number who remain at the end.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	2
7	3
8	3
9	3
10	3
11	3
12	3
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	6
28	6
29	6
30	6
31	6
32	6
33	6
34	6
35	6
36	6
37	6
38	6
39	7
40	7
41	7
42	7
43	7
44	7
45	7
46	7
47	7
48	7
49	8
50	8
51	8
52	8
53	8
54	8
55	8
56	8
57	8
58	8
59	8
60	8
61	8
62	8
63	9
64	9
65	9
66	9
67	9
68	9
69	9
70	9
71	9
72	9
73	9
74	9
75	9
76	9
77	9
78	9
79	10
80	10
81	10
82	10
83	10
84	10
85	10
86	10
87	10
88	10
89	10
90	10
91	11
92	11
93	11
94	11
95	11
96	11

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	2
7	3
8	3
9	3
10	3
11	3
12	3
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	6
28	6
29	6
30	6
31	6
32	6
33	6
34	6
35	6
36	6
37	6
38	6
39	7
40	7
41	7
42	7
43	7
44	7
45	7
46	7
47	7
48	7
49	8
50	8
51	8
52	8
53	8
54	8
55	8
56	8
57	8
58	8
59	8
60	8
61	8
62	8
63	9
64	9
65	9
66	9
67	9
68	9
69	9
70	9
71	9
72	9
73	9
74	9
75	9
76	9
77	9
78	9
79	10
80	10
81	10
82	10
83	10
84	10
85	10
86	10
87	10
88	10
89	10
90	10
91	11
92	11
93	11
94	11
95	11
96	11

n	a(n)
1	1
2	1
3	2
4	2
5	2
6	2
7	3
8	3
9	3
10	3
11	3
12	3
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	6
28	6
29	6
30	6
31	6
32	6
33	6
34	6
35	6
36	6
37	6
38	6
39	7
40	7
41	7
42	7
43	7
44	7
45	7
46	7
47	7
48	7
49	8
50	8
51	8
52	8
53	8
54	8
55	8
56	8
57	8
58	8
59	8
60	8
61	8
62	8
63	9
64	9
65	9
66	9
67	9
68	9
69	9
70	9
71	9
72	9
73	9
74	9
75	9
76	9
77	9
78	9
79	10
80	10
81	10
82	10
83	10
84	10
85	10
86	10
87	10
88	10
89	10
90	10
91	11
92	11
93	11
94	11
95	11
96	11