A114383 - cp's OEIS frontend

A114383 Length of all-prime chain of prime(n) + successive even triangular numbers.

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

[1, 2, 3, 2, 4, 2, 1, 2, 1, 9, 3, 2, 1, 2, 2, 1, 12, 2, 1, 8, 1, 2, 1, 3, 2, 5, 2, 1, 1, 1, 2, 1, 1, 1, 2, 3, 1, 2, 2, 1, 1, 2, 2, 1, 1, 1, 4, 2, 1, 2, 1, 1, 2, 2, 2, 1, 3, 2, 1, 1, 1, 3, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 6, 1, 2, 1, 1, 1, 1, 1, 1, 1, 4, 1, 2, 1]

cp's OEIS Frontend

A114383 Length of all-prime chain of prime(n) + successive even triangular numbers.

Table of values

List of values

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

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

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