A348747 - cp's OEIS frontend

A348747 Fully multiplicative with a(2) = 1, a(3) = 2, a(5) = 3, a(A002144(1+n)) = A002144(n) and a(A002145(1+n)) = a(A002145(1+n)) for all n >= 1, where A002144 and A002145 give the primes of the form 4k+1 and 4k+3 respectively.

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

[1, 1, 2, 1, 3, 2, 7, 1, 4, 3, 11, 2, 5, 7, 6, 1, 13, 4, 19, 3, 14, 11, 23, 2, 9, 5, 8, 7, 17, 6, 31, 1, 22, 13, 21, 4, 29, 19, 10, 3, 37, 14, 43, 11, 12, 23, 47, 2, 49, 9, 26, 5, 41, 8, 33, 7, 38, 17, 59, 6, 53, 31, 28, 1, 15, 22, 67, 13, 46, 21, 71, 4, 61, 29, 18, 19, 77, 10, 79, 3, 16, 37, 83, 14, 39, 43, 34, 11, 73]

cp's OEIS Frontend

A348747 Fully multiplicative with a(2) = 1, a(3) = 2, a(5) = 3, a(A002144(1+n)) = A002144(n) and a(A002145(1+n)) = a(A002145(1+n)) for all n >= 1, where A002144 and A002145 give the primes of the form 4k+1 and 4k+3 respectively.

Table of values

List of values

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

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

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