A219328 - cp's OEIS frontend

A219328 Number of different prime divisors >= prime(n) of sums of two consecutive terms of sequence {f_n(k)} defined in A224523.

n	a(n)
1	1
2	1
3	1
4	3
5	3
6	3
7	4
8	7
9	3
10	3
11	3
12	3
13	3
14	3
15	3
16	3
17	3
18	9
19	9
20	9
21	9
22	9
23	9
24	18
25	14
26	6
27	6
28	6
29	6
30	6
31	6
32	6
33	6
34	6
35	9
36	9
37	12
38	19
39	19
40	19
41	19
42	19
43	19
44	19
45	19
46	5
47	5
48	5
49	5
50	5
51	5
52	4
53	4
54	4
55	4
56	4
57	4
58	4
59	4
60	4
61	4
62	4
63	4
64	4
65	4
66	4
67	4
68	4
69	4
70	4
71	4
72	4
73	4
74	4
75	4
76	4
77	4
78	4
79	4
80	4
81	4
82	4
83	4
84	4
85	4
86	4
87	4
88	4
89	4
90	4
91	4
92	4
93	4
94	4
95	4
96	4
97	4
98	4
99	4
100	4
101	4
102	4
103	4
104	4
105	4
106	4
107	4
108	4
109	4
110	4
111	4
112	4
113	4
114	4
115	4
116	4
117	4
118	4
119	4
120	4
121	6

[1, 1, 1, 3, 3, 3, 4, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 9, 9, 9, 9, 9, 9, 18, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 9, 9, 12, 19, 19, 19, 19, 19, 19, 19, 19, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 6]

cp's OEIS Frontend

A219328 Number of different prime divisors >= prime(n) of sums of two consecutive terms of sequence {f_n(k)} defined in A224523.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	3
5	3
6	3
7	4
8	7
9	3
10	3
11	3
12	3
13	3
14	3
15	3
16	3
17	3
18	9
19	9
20	9
21	9
22	9
23	9
24	18
25	14
26	6
27	6
28	6
29	6
30	6
31	6
32	6
33	6
34	6
35	9
36	9
37	12
38	19
39	19
40	19
41	19
42	19
43	19
44	19
45	19
46	5
47	5
48	5
49	5
50	5
51	5
52	4
53	4
54	4
55	4
56	4
57	4
58	4
59	4
60	4
61	4
62	4
63	4
64	4
65	4
66	4
67	4
68	4
69	4
70	4
71	4
72	4
73	4
74	4
75	4
76	4
77	4
78	4
79	4
80	4
81	4
82	4
83	4
84	4
85	4
86	4
87	4
88	4
89	4
90	4
91	4
92	4
93	4
94	4
95	4
96	4
97	4
98	4
99	4
100	4
101	4
102	4
103	4
104	4
105	4
106	4
107	4
108	4
109	4
110	4
111	4
112	4
113	4
114	4
115	4
116	4
117	4
118	4
119	4
120	4
121	6

n	a(n)
1	1
2	1
3	1
4	3
5	3
6	3
7	4
8	7
9	3
10	3
11	3
12	3
13	3
14	3
15	3
16	3
17	3
18	9
19	9
20	9
21	9
22	9
23	9
24	18
25	14
26	6
27	6
28	6
29	6
30	6
31	6
32	6
33	6
34	6
35	9
36	9
37	12
38	19
39	19
40	19
41	19
42	19
43	19
44	19
45	19
46	5
47	5
48	5
49	5
50	5
51	5
52	4
53	4
54	4
55	4
56	4
57	4
58	4
59	4
60	4
61	4
62	4
63	4
64	4
65	4
66	4
67	4
68	4
69	4
70	4
71	4
72	4
73	4
74	4
75	4
76	4
77	4
78	4
79	4
80	4
81	4
82	4
83	4
84	4
85	4
86	4
87	4
88	4
89	4
90	4
91	4
92	4
93	4
94	4
95	4
96	4
97	4
98	4
99	4
100	4
101	4
102	4
103	4
104	4
105	4
106	4
107	4
108	4
109	4
110	4
111	4
112	4
113	4
114	4
115	4
116	4
117	4
118	4
119	4
120	4
121	6

n	a(n)
1	1
2	1
3	1
4	3
5	3
6	3
7	4
8	7
9	3
10	3
11	3
12	3
13	3
14	3
15	3
16	3
17	3
18	9
19	9
20	9
21	9
22	9
23	9
24	18
25	14
26	6
27	6
28	6
29	6
30	6
31	6
32	6
33	6
34	6
35	9
36	9
37	12
38	19
39	19
40	19
41	19
42	19
43	19
44	19
45	19
46	5
47	5
48	5
49	5
50	5
51	5
52	4
53	4
54	4
55	4
56	4
57	4
58	4
59	4
60	4
61	4
62	4
63	4
64	4
65	4
66	4
67	4
68	4
69	4
70	4
71	4
72	4
73	4
74	4
75	4
76	4
77	4
78	4
79	4
80	4
81	4
82	4
83	4
84	4
85	4
86	4
87	4
88	4
89	4
90	4
91	4
92	4
93	4
94	4
95	4
96	4
97	4
98	4
99	4
100	4
101	4
102	4
103	4
104	4
105	4
106	4
107	4
108	4
109	4
110	4
111	4
112	4
113	4
114	4
115	4
116	4
117	4
118	4
119	4
120	4
121	6