A263152 - cp's OEIS frontend

A263152 a(n) is the greatest common unitary divisor of the friendly pairs, A050972(n) and A050973(n).

n	a(n)
1	1
2	5
3	1
4	1
5	1
6	1
7	11
8	13
9	17
10	1
11	1
12	19
13	3
14	23
15	3
16	25
17	29
18	1
19	31
20	1
21	37
22	41
23	5
24	43
25	47
26	7
27	53
28	3
29	1
30	55
31	7
32	2
33	1
34	59
35	61
36	9
37	65
38	67
39	71
40	9
41	73
42	11
43	79
44	83
45	85
46	11
47	5
48	5
49	89
50	11
51	13
52	95
53	97
54	101
55	103
56	13
57	11
58	107
59	109
60	113
61	115
62	4
63	121
64	17
65	7
66	125
67	13
68	127
69	131

[1, 5, 1, 1, 1, 1, 11, 13, 17, 1, 1, 19, 3, 23, 3, 25, 29, 1, 31, 1, 37, 41, 5, 43, 47, 7, 53, 3, 1, 55, 7, 2, 1, 59, 61, 9, 65, 67, 71, 9, 73, 11, 79, 83, 85, 11, 5, 5, 89, 11, 13, 95, 97, 101, 103, 13, 11, 107, 109, 113, 115, 4, 121, 17, 7, 125, 13, 127, 131]

cp's OEIS Frontend

A263152 a(n) is the greatest common unitary divisor of the friendly pairs, A050972(n) and A050973(n).

Table of values

List of values

n	a(n)
1	1
2	5
3	1
4	1
5	1
6	1
7	11
8	13
9	17
10	1
11	1
12	19
13	3
14	23
15	3
16	25
17	29
18	1
19	31
20	1
21	37
22	41
23	5
24	43
25	47
26	7
27	53
28	3
29	1
30	55
31	7
32	2
33	1
34	59
35	61
36	9
37	65
38	67
39	71
40	9
41	73
42	11
43	79
44	83
45	85
46	11
47	5
48	5
49	89
50	11
51	13
52	95
53	97
54	101
55	103
56	13
57	11
58	107
59	109
60	113
61	115
62	4
63	121
64	17
65	7
66	125
67	13
68	127
69	131

n	a(n)
1	1
2	5
3	1
4	1
5	1
6	1
7	11
8	13
9	17
10	1
11	1
12	19
13	3
14	23
15	3
16	25
17	29
18	1
19	31
20	1
21	37
22	41
23	5
24	43
25	47
26	7
27	53
28	3
29	1
30	55
31	7
32	2
33	1
34	59
35	61
36	9
37	65
38	67
39	71
40	9
41	73
42	11
43	79
44	83
45	85
46	11
47	5
48	5
49	89
50	11
51	13
52	95
53	97
54	101
55	103
56	13
57	11
58	107
59	109
60	113
61	115
62	4
63	121
64	17
65	7
66	125
67	13
68	127
69	131

n	a(n)
1	1
2	5
3	1
4	1
5	1
6	1
7	11
8	13
9	17
10	1
11	1
12	19
13	3
14	23
15	3
16	25
17	29
18	1
19	31
20	1
21	37
22	41
23	5
24	43
25	47
26	7
27	53
28	3
29	1
30	55
31	7
32	2
33	1
34	59
35	61
36	9
37	65
38	67
39	71
40	9
41	73
42	11
43	79
44	83
45	85
46	11
47	5
48	5
49	89
50	11
51	13
52	95
53	97
54	101
55	103
56	13
57	11
58	107
59	109
60	113
61	115
62	4
63	121
64	17
65	7
66	125
67	13
68	127
69	131