A277730 - cp's OEIS frontend

A277730 Irregular triangle read by rows: T(n,k) = number of times a gap of 2k occurs between the first n successive odd primes.

n	a(n)
2	1
3	2
4	2
5	1
6	3
7	1
8	3
9	2
10	4
11	2
12	4
13	3
14	4
15	3
16	1
17	5
18	3
19	1
20	5
21	3
22	2
23	5
24	4
25	2
26	6
27	4
28	2
29	6
30	5
31	2
32	6
33	5
34	3
35	6
36	5
37	4
38	7
39	5
40	4
41	7
42	5
43	5
44	7
45	6
46	5
47	8
48	6
49	5
50	8
51	6
52	6
53	8
54	7
55	6
56	8
57	7
58	7
59	8
60	7
61	7
62	1
63	8
64	8
65	7
66	1
67	9
68	8
69	7
70	1
71	9
72	9
73	7
74	1
75	10
76	9
77	7
78	1
79	10
80	10
81	7
82	1
83	10
84	10
85	7
86	1
87	0
88	0
89	1
90	10
91	11
92	7
93	1
94	0
95	0
96	1

[1, 2, 2, 1, 3, 1, 3, 2, 4, 2, 4, 3, 4, 3, 1, 5, 3, 1, 5, 3, 2, 5, 4, 2, 6, 4, 2, 6, 5, 2, 6, 5, 3, 6, 5, 4, 7, 5, 4, 7, 5, 5, 7, 6, 5, 8, 6, 5, 8, 6, 6, 8, 7, 6, 8, 7, 7, 8, 7, 7, 1, 8, 8, 7, 1, 9, 8, 7, 1, 9, 9, 7, 1, 10, 9, 7, 1, 10, 10, 7, 1, 10, 10, 7, 1, 0, 0, 1, 10, 11, 7, 1, 0, 0, 1]

cp's OEIS Frontend

A277730 Irregular triangle read by rows: T(n,k) = number of times a gap of 2k occurs between the first n successive odd primes.

Table of values

List of values

n	a(n)
2	1
3	2
4	2
5	1
6	3
7	1
8	3
9	2
10	4
11	2
12	4
13	3
14	4
15	3
16	1
17	5
18	3
19	1
20	5
21	3
22	2
23	5
24	4
25	2
26	6
27	4
28	2
29	6
30	5
31	2
32	6
33	5
34	3
35	6
36	5
37	4
38	7
39	5
40	4
41	7
42	5
43	5
44	7
45	6
46	5
47	8
48	6
49	5
50	8
51	6
52	6
53	8
54	7
55	6
56	8
57	7
58	7
59	8
60	7
61	7
62	1
63	8
64	8
65	7
66	1
67	9
68	8
69	7
70	1
71	9
72	9
73	7
74	1
75	10
76	9
77	7
78	1
79	10
80	10
81	7
82	1
83	10
84	10
85	7
86	1
87	0
88	0
89	1
90	10
91	11
92	7
93	1
94	0
95	0
96	1

n	a(n)
2	1
3	2
4	2
5	1
6	3
7	1
8	3
9	2
10	4
11	2
12	4
13	3
14	4
15	3
16	1
17	5
18	3
19	1
20	5
21	3
22	2
23	5
24	4
25	2
26	6
27	4
28	2
29	6
30	5
31	2
32	6
33	5
34	3
35	6
36	5
37	4
38	7
39	5
40	4
41	7
42	5
43	5
44	7
45	6
46	5
47	8
48	6
49	5
50	8
51	6
52	6
53	8
54	7
55	6
56	8
57	7
58	7
59	8
60	7
61	7
62	1
63	8
64	8
65	7
66	1
67	9
68	8
69	7
70	1
71	9
72	9
73	7
74	1
75	10
76	9
77	7
78	1
79	10
80	10
81	7
82	1
83	10
84	10
85	7
86	1
87	0
88	0
89	1
90	10
91	11
92	7
93	1
94	0
95	0
96	1

n	a(n)
2	1
3	2
4	2
5	1
6	3
7	1
8	3
9	2
10	4
11	2
12	4
13	3
14	4
15	3
16	1
17	5
18	3
19	1
20	5
21	3
22	2
23	5
24	4
25	2
26	6
27	4
28	2
29	6
30	5
31	2
32	6
33	5
34	3
35	6
36	5
37	4
38	7
39	5
40	4
41	7
42	5
43	5
44	7
45	6
46	5
47	8
48	6
49	5
50	8
51	6
52	6
53	8
54	7
55	6
56	8
57	7
58	7
59	8
60	7
61	7
62	1
63	8
64	8
65	7
66	1
67	9
68	8
69	7
70	1
71	9
72	9
73	7
74	1
75	10
76	9
77	7
78	1
79	10
80	10
81	7
82	1
83	10
84	10
85	7
86	1
87	0
88	0
89	1
90	10
91	11
92	7
93	1
94	0
95	0
96	1