A249727 - cp's OEIS frontend

A249727 Start with a(1) = 1; then numbers 1 .. primepi(2), followed by numbers 1 .. primepi(3), and then numbers 1 .. primepi(4), ..., etc, where A000720 gives primepi.

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	3
10	1
11	2
12	3
13	1
14	2
15	3
16	4
17	1
18	2
19	3
20	4
21	1
22	2
23	3
24	4
25	1
26	2
27	3
28	4
29	1
30	2
31	3
32	4
33	5
34	1
35	2
36	3
37	4
38	5
39	1
40	2
41	3
42	4
43	5
44	6
45	1
46	2
47	3
48	4
49	5
50	6
51	1
52	2
53	3
54	4
55	5
56	6
57	1
58	2
59	3
60	4
61	5
62	6
63	1
64	2
65	3
66	4
67	5
68	6
69	7
70	1
71	2
72	3
73	4
74	5
75	6
76	7
77	1
78	2
79	3
80	4
81	5
82	6
83	7
84	8
85	1
86	2
87	3
88	4
89	5
90	6
91	7
92	8
93	1
94	2
95	3
96	4
97	5
98	6
99	7
100	8
101	1
102	2
103	3
104	4
105	5
106	6
107	7
108	8
109	1
110	2
111	3
112	4
113	5
114	6
115	7
116	8
117	9

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

cp's OEIS Frontend

A249727 Start with a(1) = 1; then numbers 1 .. primepi(2), followed by numbers 1 .. primepi(3), and then numbers 1 .. primepi(4), ..., etc, where A000720 gives primepi.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	3
10	1
11	2
12	3
13	1
14	2
15	3
16	4
17	1
18	2
19	3
20	4
21	1
22	2
23	3
24	4
25	1
26	2
27	3
28	4
29	1
30	2
31	3
32	4
33	5
34	1
35	2
36	3
37	4
38	5
39	1
40	2
41	3
42	4
43	5
44	6
45	1
46	2
47	3
48	4
49	5
50	6
51	1
52	2
53	3
54	4
55	5
56	6
57	1
58	2
59	3
60	4
61	5
62	6
63	1
64	2
65	3
66	4
67	5
68	6
69	7
70	1
71	2
72	3
73	4
74	5
75	6
76	7
77	1
78	2
79	3
80	4
81	5
82	6
83	7
84	8
85	1
86	2
87	3
88	4
89	5
90	6
91	7
92	8
93	1
94	2
95	3
96	4
97	5
98	6
99	7
100	8
101	1
102	2
103	3
104	4
105	5
106	6
107	7
108	8
109	1
110	2
111	3
112	4
113	5
114	6
115	7
116	8
117	9

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	3
10	1
11	2
12	3
13	1
14	2
15	3
16	4
17	1
18	2
19	3
20	4
21	1
22	2
23	3
24	4
25	1
26	2
27	3
28	4
29	1
30	2
31	3
32	4
33	5
34	1
35	2
36	3
37	4
38	5
39	1
40	2
41	3
42	4
43	5
44	6
45	1
46	2
47	3
48	4
49	5
50	6
51	1
52	2
53	3
54	4
55	5
56	6
57	1
58	2
59	3
60	4
61	5
62	6
63	1
64	2
65	3
66	4
67	5
68	6
69	7
70	1
71	2
72	3
73	4
74	5
75	6
76	7
77	1
78	2
79	3
80	4
81	5
82	6
83	7
84	8
85	1
86	2
87	3
88	4
89	5
90	6
91	7
92	8
93	1
94	2
95	3
96	4
97	5
98	6
99	7
100	8
101	1
102	2
103	3
104	4
105	5
106	6
107	7
108	8
109	1
110	2
111	3
112	4
113	5
114	6
115	7
116	8
117	9

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	1
8	2
9	3
10	1
11	2
12	3
13	1
14	2
15	3
16	4
17	1
18	2
19	3
20	4
21	1
22	2
23	3
24	4
25	1
26	2
27	3
28	4
29	1
30	2
31	3
32	4
33	5
34	1
35	2
36	3
37	4
38	5
39	1
40	2
41	3
42	4
43	5
44	6
45	1
46	2
47	3
48	4
49	5
50	6
51	1
52	2
53	3
54	4
55	5
56	6
57	1
58	2
59	3
60	4
61	5
62	6
63	1
64	2
65	3
66	4
67	5
68	6
69	7
70	1
71	2
72	3
73	4
74	5
75	6
76	7
77	1
78	2
79	3
80	4
81	5
82	6
83	7
84	8
85	1
86	2
87	3
88	4
89	5
90	6
91	7
92	8
93	1
94	2
95	3
96	4
97	5
98	6
99	7
100	8
101	1
102	2
103	3
104	4
105	5
106	6
107	7
108	8
109	1
110	2
111	3
112	4
113	5
114	6
115	7
116	8
117	9