A194189 - cp's OEIS frontend

A194189 Number of primes between the n-th triangular number and the n-th square.

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	3
7	6
8	7
9	8
10	9
11	12
12	13
13	15
14	17
15	18
16	22
17	25
18	27
19	30
20	32
21	35
22	38
23	41
24	43
25	48
26	52
27	55
28	58
29	62
30	64
31	68
32	73
33	79
34	83
35	86
36	89
37	93
38	97
39	103
40	110
41	114
42	120
43	123
44	129
45	132
46	139
47	141
48	149
49	157
50	162
51	162
52	173
53	183
54	186
55	192
56	195
57	198
58	207
59	213
60	222
61	229

[0, 0, 1, 2, 3, 3, 6, 7, 8, 9, 12, 13, 15, 17, 18, 22, 25, 27, 30, 32, 35, 38, 41, 43, 48, 52, 55, 58, 62, 64, 68, 73, 79, 83, 86, 89, 93, 97, 103, 110, 114, 120, 123, 129, 132, 139, 141, 149, 157, 162, 162, 173, 183, 186, 192, 195, 198, 207, 213, 222, 229]

cp's OEIS Frontend

A194189 Number of primes between the n-th triangular number and the n-th square.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	3
7	6
8	7
9	8
10	9
11	12
12	13
13	15
14	17
15	18
16	22
17	25
18	27
19	30
20	32
21	35
22	38
23	41
24	43
25	48
26	52
27	55
28	58
29	62
30	64
31	68
32	73
33	79
34	83
35	86
36	89
37	93
38	97
39	103
40	110
41	114
42	120
43	123
44	129
45	132
46	139
47	141
48	149
49	157
50	162
51	162
52	173
53	183
54	186
55	192
56	195
57	198
58	207
59	213
60	222
61	229

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	3
7	6
8	7
9	8
10	9
11	12
12	13
13	15
14	17
15	18
16	22
17	25
18	27
19	30
20	32
21	35
22	38
23	41
24	43
25	48
26	52
27	55
28	58
29	62
30	64
31	68
32	73
33	79
34	83
35	86
36	89
37	93
38	97
39	103
40	110
41	114
42	120
43	123
44	129
45	132
46	139
47	141
48	149
49	157
50	162
51	162
52	173
53	183
54	186
55	192
56	195
57	198
58	207
59	213
60	222
61	229

n	a(n)
1	0
2	0
3	1
4	2
5	3
6	3
7	6
8	7
9	8
10	9
11	12
12	13
13	15
14	17
15	18
16	22
17	25
18	27
19	30
20	32
21	35
22	38
23	41
24	43
25	48
26	52
27	55
28	58
29	62
30	64
31	68
32	73
33	79
34	83
35	86
36	89
37	93
38	97
39	103
40	110
41	114
42	120
43	123
44	129
45	132
46	139
47	141
48	149
49	157
50	162
51	162
52	173
53	183
54	186
55	192
56	195
57	198
58	207
59	213
60	222
61	229