A211189 - cp's OEIS frontend

A211189 Number of prime divisors formed by {2} and the consecutive Pythagorean primes for all the composites k^2 + 1 between the two primes A002496(n) and A002496(n+1).

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

[0, 2, 1, 3, 2, 1, 3, 4, 1, 4, 2, 7, 1, 4, 7, 6, 4, 2, 6, 4, 2, 4, 1, 2, 2, 4, 4, 3, 2, 5, 4, 3, 2, 10, 1, 2, 7, 4, 2, 3, 5, 4, 2, 2, 4, 5, 3, 4, 6, 5, 4, 7, 4, 7, 1, 5, 3, 2, 7, 5, 3, 4, 2, 8, 1, 2, 4, 7, 2, 9, 5, 4, 12, 2, 4, 6, 10, 1, 4, 1, 2, 9, 2, 5, 2, 4]

cp's OEIS Frontend

A211189 Number of prime divisors formed by {2} and the consecutive Pythagorean primes for all the composites k^2 + 1 between the two primes A002496(n) and A002496(n+1).

Table of values

List of values

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

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

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