A324394 - cp's OEIS frontend

A324394 a(n) = A009194(A005940(1+n)), where A005940 is the Doudna sequence and A009194(n) = gcd(n,sigma(n)).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	6
6	1
7	1
8	1
9	2
10	3
11	4
12	1
13	3
14	1
15	1
16	1
17	2
18	1
19	2
20	1
21	6
22	3
23	12
24	1
25	1
26	1
27	1
28	1
29	6
30	1
31	1
32	1
33	2
34	3
35	28
36	1
37	6
38	1
39	10
40	1
41	2
42	3
43	12
44	1
45	18
46	15
47	4
48	1
49	1
50	3
51	1
52	1
53	6
54	1
55	3
56	1
57	2
58	3
59	4
60	1
61	3
62	1
63	1
64	1
65	2
66	1
67	4
68	1
69	6
70	3
71	8
72	7
73	2
74	3
75	28
76	1
77	6
78	1
79	2
80	1
81	2
82	3
83	28
84	1
85	6
86	3
87	120
88	1
89	2
90	1
91	6
92	1
93	90
94	3
95	12
96	1
97	1
98	1
99	7
100	1
101	6
102	3
103	5
104	7
105	2

[1, 1, 1, 1, 1, 6, 1, 1, 1, 2, 3, 4, 1, 3, 1, 1, 1, 2, 1, 2, 1, 6, 3, 12, 1, 1, 1, 1, 1, 6, 1, 1, 1, 2, 3, 28, 1, 6, 1, 10, 1, 2, 3, 12, 1, 18, 15, 4, 1, 1, 3, 1, 1, 6, 1, 3, 1, 2, 3, 4, 1, 3, 1, 1, 1, 2, 1, 4, 1, 6, 3, 8, 7, 2, 3, 28, 1, 6, 1, 2, 1, 2, 3, 28, 1, 6, 3, 120, 1, 2, 1, 6, 1, 90, 3, 12, 1, 1, 1, 7, 1, 6, 3, 5, 7, 2]

cp's OEIS Frontend

A324394 a(n) = A009194(A005940(1+n)), where A005940 is the Doudna sequence and A009194(n) = gcd(n,sigma(n)).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	6
6	1
7	1
8	1
9	2
10	3
11	4
12	1
13	3
14	1
15	1
16	1
17	2
18	1
19	2
20	1
21	6
22	3
23	12
24	1
25	1
26	1
27	1
28	1
29	6
30	1
31	1
32	1
33	2
34	3
35	28
36	1
37	6
38	1
39	10
40	1
41	2
42	3
43	12
44	1
45	18
46	15
47	4
48	1
49	1
50	3
51	1
52	1
53	6
54	1
55	3
56	1
57	2
58	3
59	4
60	1
61	3
62	1
63	1
64	1
65	2
66	1
67	4
68	1
69	6
70	3
71	8
72	7
73	2
74	3
75	28
76	1
77	6
78	1
79	2
80	1
81	2
82	3
83	28
84	1
85	6
86	3
87	120
88	1
89	2
90	1
91	6
92	1
93	90
94	3
95	12
96	1
97	1
98	1
99	7
100	1
101	6
102	3
103	5
104	7
105	2

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	6
6	1
7	1
8	1
9	2
10	3
11	4
12	1
13	3
14	1
15	1
16	1
17	2
18	1
19	2
20	1
21	6
22	3
23	12
24	1
25	1
26	1
27	1
28	1
29	6
30	1
31	1
32	1
33	2
34	3
35	28
36	1
37	6
38	1
39	10
40	1
41	2
42	3
43	12
44	1
45	18
46	15
47	4
48	1
49	1
50	3
51	1
52	1
53	6
54	1
55	3
56	1
57	2
58	3
59	4
60	1
61	3
62	1
63	1
64	1
65	2
66	1
67	4
68	1
69	6
70	3
71	8
72	7
73	2
74	3
75	28
76	1
77	6
78	1
79	2
80	1
81	2
82	3
83	28
84	1
85	6
86	3
87	120
88	1
89	2
90	1
91	6
92	1
93	90
94	3
95	12
96	1
97	1
98	1
99	7
100	1
101	6
102	3
103	5
104	7
105	2

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	6
6	1
7	1
8	1
9	2
10	3
11	4
12	1
13	3
14	1
15	1
16	1
17	2
18	1
19	2
20	1
21	6
22	3
23	12
24	1
25	1
26	1
27	1
28	1
29	6
30	1
31	1
32	1
33	2
34	3
35	28
36	1
37	6
38	1
39	10
40	1
41	2
42	3
43	12
44	1
45	18
46	15
47	4
48	1
49	1
50	3
51	1
52	1
53	6
54	1
55	3
56	1
57	2
58	3
59	4
60	1
61	3
62	1
63	1
64	1
65	2
66	1
67	4
68	1
69	6
70	3
71	8
72	7
73	2
74	3
75	28
76	1
77	6
78	1
79	2
80	1
81	2
82	3
83	28
84	1
85	6
86	3
87	120
88	1
89	2
90	1
91	6
92	1
93	90
94	3
95	12
96	1
97	1
98	1
99	7
100	1
101	6
102	3
103	5
104	7
105	2