A023595 - cp's OEIS frontend

A023595 a(n) = sum of exponents in prime-power factorization of 2*prime(n)+1.

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

[1, 1, 1, 2, 1, 3, 2, 2, 1, 1, 3, 3, 1, 2, 2, 1, 2, 2, 4, 2, 3, 2, 1, 1, 3, 2, 3, 2, 2, 1, 3, 1, 3, 3, 2, 2, 4, 2, 2, 1, 1, 3, 1, 3, 2, 3, 3, 2, 3, 4, 1, 1, 3, 1, 2, 2, 3, 2, 3, 1, 5, 1, 3, 2, 3, 2, 3, 5, 2, 2, 2, 1, 4, 3, 3, 2, 2, 3, 2, 4, 1, 2, 1, 3, 2, 1, 2, 3, 2, 3, 3, 2, 4, 1, 4, 2, 1, 2, 2]

cp's OEIS Frontend

A023595 a(n) = sum of exponents in prime-power factorization of 2*prime(n)+1.

Table of values

List of values

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

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

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