A114409 - cp's OEIS frontend

A114409 Length of all-prime chain of prime[n] + successive even pentagonal numbers.

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

[1, 2, 3, 2, 1, 2, 4, 1, 2, 4, 1, 2, 1, 2, 1, 2, 4, 4, 2, 1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 4, 1, 2, 2, 1, 3, 1, 1, 2, 1, 2, 2, 1, 1, 1, 2, 4, 1, 2, 3, 1, 2, 1, 2, 2, 1, 2, 3, 1, 2, 1, 1, 1, 1, 1, 1, 1, 3, 2, 1, 1, 1, 3, 1, 1, 1, 2, 4, 1, 4, 2, 4, 2, 1, 1, 1, 2, 1]

cp's OEIS Frontend

A114409 Length of all-prime chain of prime[n] + successive even pentagonal numbers.

Table of values

List of values

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

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

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