A278495 - cp's OEIS frontend

A278495 a(n) = number of primes in range [n^2, (n+1)^2] that are leaves in "the least squares beanstalk" tree.

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

[1, 2, 1, 2, 2, 2, 1, 1, 2, 4, 1, 2, 1, 3, 2, 4, 3, 3, 3, 5, 3, 2, 2, 4, 4, 4, 4, 3, 4, 4, 4, 4, 2, 3, 3, 2, 4, 2, 5, 4, 6, 3, 5, 4, 5, 5, 4, 6, 3, 3, 6, 8, 4, 5, 3, 5, 5, 5, 4, 6, 6, 7, 5, 5, 7, 6, 8, 8, 8, 8, 5, 5, 5, 8, 7, 7, 7, 3, 13, 5, 8, 6, 8, 7, 8, 5, 14, 7, 8, 8, 10, 7, 5, 8, 6, 7, 6, 9, 4, 10, 4, 9, 8, 6, 8, 8, 8, 6, 10, 11, 13, 9]

cp's OEIS Frontend

A278495 a(n) = number of primes in range [n^2, (n+1)^2] that are leaves in "the least squares beanstalk" tree.

Table of values

List of values

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

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

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