A345059 - cp's OEIS frontend

A345059 a(n) = A129283(n) / gcd(sigma(n), A129283(n)), where A129283(n) is the sum of n and its arithmetic derivative.

n	a(n)
1	1
2	1
3	1
4	8
5	1
6	11
7	1
8	4
9	15
10	17
11	1
12	1
13	1
14	23
15	23
16	48
17	1
18	1
19	1
20	22
21	31
22	35
23	1
24	17
25	35
26	41
27	27
28	15
29	1
30	61
31	1
32	16
33	47
34	53
35	47
36	96
37	1
38	59
39	55
40	6
41	1
42	83
43	1
44	23
45	14
46	71
47	1
48	40
49	21
50	95
51	71
52	54
53	1
54	9
55	71
56	37
57	79
58	89
59	1
60	19
61	1
62	95
63	57
64	256
65	83
66	127
67	1
68	10
69	95
70	43
71	1
72	76
73	1
74	113
75	65
76	39
77	95
78	149
79	1
80	128
81	189
82	125
83	1
84	13
85	107

[1, 1, 1, 8, 1, 11, 1, 4, 15, 17, 1, 1, 1, 23, 23, 48, 1, 1, 1, 22, 31, 35, 1, 17, 35, 41, 27, 15, 1, 61, 1, 16, 47, 53, 47, 96, 1, 59, 55, 6, 1, 83, 1, 23, 14, 71, 1, 40, 21, 95, 71, 54, 1, 9, 71, 37, 79, 89, 1, 19, 1, 95, 57, 256, 83, 127, 1, 10, 95, 43, 1, 76, 1, 113, 65, 39, 95, 149, 1, 128, 189, 125, 1, 13, 107]

cp's OEIS Frontend

A345059 a(n) = A129283(n) / gcd(sigma(n), A129283(n)), where A129283(n) is the sum of n and its arithmetic derivative.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	8
5	1
6	11
7	1
8	4
9	15
10	17
11	1
12	1
13	1
14	23
15	23
16	48
17	1
18	1
19	1
20	22
21	31
22	35
23	1
24	17
25	35
26	41
27	27
28	15
29	1
30	61
31	1
32	16
33	47
34	53
35	47
36	96
37	1
38	59
39	55
40	6
41	1
42	83
43	1
44	23
45	14
46	71
47	1
48	40
49	21
50	95
51	71
52	54
53	1
54	9
55	71
56	37
57	79
58	89
59	1
60	19
61	1
62	95
63	57
64	256
65	83
66	127
67	1
68	10
69	95
70	43
71	1
72	76
73	1
74	113
75	65
76	39
77	95
78	149
79	1
80	128
81	189
82	125
83	1
84	13
85	107

n	a(n)
1	1
2	1
3	1
4	8
5	1
6	11
7	1
8	4
9	15
10	17
11	1
12	1
13	1
14	23
15	23
16	48
17	1
18	1
19	1
20	22
21	31
22	35
23	1
24	17
25	35
26	41
27	27
28	15
29	1
30	61
31	1
32	16
33	47
34	53
35	47
36	96
37	1
38	59
39	55
40	6
41	1
42	83
43	1
44	23
45	14
46	71
47	1
48	40
49	21
50	95
51	71
52	54
53	1
54	9
55	71
56	37
57	79
58	89
59	1
60	19
61	1
62	95
63	57
64	256
65	83
66	127
67	1
68	10
69	95
70	43
71	1
72	76
73	1
74	113
75	65
76	39
77	95
78	149
79	1
80	128
81	189
82	125
83	1
84	13
85	107

n	a(n)
1	1
2	1
3	1
4	8
5	1
6	11
7	1
8	4
9	15
10	17
11	1
12	1
13	1
14	23
15	23
16	48
17	1
18	1
19	1
20	22
21	31
22	35
23	1
24	17
25	35
26	41
27	27
28	15
29	1
30	61
31	1
32	16
33	47
34	53
35	47
36	96
37	1
38	59
39	55
40	6
41	1
42	83
43	1
44	23
45	14
46	71
47	1
48	40
49	21
50	95
51	71
52	54
53	1
54	9
55	71
56	37
57	79
58	89
59	1
60	19
61	1
62	95
63	57
64	256
65	83
66	127
67	1
68	10
69	95
70	43
71	1
72	76
73	1
74	113
75	65
76	39
77	95
78	149
79	1
80	128
81	189
82	125
83	1
84	13
85	107