A072438 - cp's OEIS frontend

A072438 Remove prime factors of form 4*k+1.

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

[1, 2, 3, 4, 1, 6, 7, 8, 9, 2, 11, 12, 1, 14, 3, 16, 1, 18, 19, 4, 21, 22, 23, 24, 1, 2, 27, 28, 1, 6, 31, 32, 33, 2, 7, 36, 1, 38, 3, 8, 1, 42, 43, 44, 9, 46, 47, 48, 49, 2, 3, 4, 1, 54, 11, 56, 57, 2, 59, 12, 1, 62, 63, 64, 1, 66, 67, 4, 69, 14, 71, 72, 1, 2, 3, 76, 77, 6, 79, 16, 81, 2]

cp's OEIS Frontend

A072438 Remove prime factors of form 4*k+1.

Table of values

List of values

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

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

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