A366795 - cp's OEIS frontend

A366795 a(n) = A344695(A005940(1+n)), where A344695(n) = gcd(psi(n), sigma(n)), and A005940 is the Doudna sequence.

n	a(n)
0	1
1	3
2	4
3	1
4	6
5	12
6	1
7	3
8	8
9	18
10	24
11	4
12	1
13	3
14	4
15	1
16	12
17	24
18	32
19	6
20	48
21	72
22	6
23	12
24	1
25	3
26	4
27	1
28	6
29	12
30	1
31	3
32	14
33	36
34	48
35	8
36	72
37	96
38	8
39	18
40	96
41	144
42	192
43	24
44	8
45	18
46	24
47	4
48	1
49	3
50	4
51	1
52	6
53	12
54	1
55	3
56	8
57	18
58	24
59	8
60	1
61	3
62	4
63	1
64	18
65	42
66	56
67	12
68	84
69	144
70	12
71	24
72	112
73	216
74	288
75	32
76	12
77	24
78	32
79	6
80	168
81	288
82	384
83	48
84	576
85	576

[1, 3, 4, 1, 6, 12, 1, 3, 8, 18, 24, 4, 1, 3, 4, 1, 12, 24, 32, 6, 48, 72, 6, 12, 1, 3, 4, 1, 6, 12, 1, 3, 14, 36, 48, 8, 72, 96, 8, 18, 96, 144, 192, 24, 8, 18, 24, 4, 1, 3, 4, 1, 6, 12, 1, 3, 8, 18, 24, 8, 1, 3, 4, 1, 18, 42, 56, 12, 84, 144, 12, 24, 112, 216, 288, 32, 12, 24, 32, 6, 168, 288, 384, 48, 576, 576]

cp's OEIS Frontend

A366795 a(n) = A344695(A005940(1+n)), where A344695(n) = gcd(psi(n), sigma(n)), and A005940 is the Doudna sequence.

Table of values

List of values

n	a(n)
0	1
1	3
2	4
3	1
4	6
5	12
6	1
7	3
8	8
9	18
10	24
11	4
12	1
13	3
14	4
15	1
16	12
17	24
18	32
19	6
20	48
21	72
22	6
23	12
24	1
25	3
26	4
27	1
28	6
29	12
30	1
31	3
32	14
33	36
34	48
35	8
36	72
37	96
38	8
39	18
40	96
41	144
42	192
43	24
44	8
45	18
46	24
47	4
48	1
49	3
50	4
51	1
52	6
53	12
54	1
55	3
56	8
57	18
58	24
59	8
60	1
61	3
62	4
63	1
64	18
65	42
66	56
67	12
68	84
69	144
70	12
71	24
72	112
73	216
74	288
75	32
76	12
77	24
78	32
79	6
80	168
81	288
82	384
83	48
84	576
85	576

n	a(n)
0	1
1	3
2	4
3	1
4	6
5	12
6	1
7	3
8	8
9	18
10	24
11	4
12	1
13	3
14	4
15	1
16	12
17	24
18	32
19	6
20	48
21	72
22	6
23	12
24	1
25	3
26	4
27	1
28	6
29	12
30	1
31	3
32	14
33	36
34	48
35	8
36	72
37	96
38	8
39	18
40	96
41	144
42	192
43	24
44	8
45	18
46	24
47	4
48	1
49	3
50	4
51	1
52	6
53	12
54	1
55	3
56	8
57	18
58	24
59	8
60	1
61	3
62	4
63	1
64	18
65	42
66	56
67	12
68	84
69	144
70	12
71	24
72	112
73	216
74	288
75	32
76	12
77	24
78	32
79	6
80	168
81	288
82	384
83	48
84	576
85	576

n	a(n)
0	1
1	3
2	4
3	1
4	6
5	12
6	1
7	3
8	8
9	18
10	24
11	4
12	1
13	3
14	4
15	1
16	12
17	24
18	32
19	6
20	48
21	72
22	6
23	12
24	1
25	3
26	4
27	1
28	6
29	12
30	1
31	3
32	14
33	36
34	48
35	8
36	72
37	96
38	8
39	18
40	96
41	144
42	192
43	24
44	8
45	18
46	24
47	4
48	1
49	3
50	4
51	1
52	6
53	12
54	1
55	3
56	8
57	18
58	24
59	8
60	1
61	3
62	4
63	1
64	18
65	42
66	56
67	12
68	84
69	144
70	12
71	24
72	112
73	216
74	288
75	32
76	12
77	24
78	32
79	6
80	168
81	288
82	384
83	48
84	576
85	576