A336455 - cp's OEIS frontend

A336455 a(n) = A335915(sigma(n)), where A335915 is a fully multiplicative sequence with a(2) = 1 and a(p) = A000265(p^2 - 1) for odd primes p, with A000265(k) giving the odd part of k.

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	1
7	1
8	3
9	21
10	1
11	1
12	3
13	3
14	1
15	1
16	15
17	1
18	21
19	3
20	3
21	1
22	1
23	1
24	3
25	15
26	3
27	3
28	3
29	3
30	1
31	1
32	3
33	1
34	1
35	1
36	63
37	45
38	3
39	3
40	3
41	3
42	1
43	15
44	3
45	21
46	1
47	1
48	15
49	45
50	15
51	1
52	9
53	1
54	3
55	1
56	3
57	3
58	3
59	3
60	3
61	15
62	1
63	21
64	63
65	3
66	1
67	9
68	3
69	1
70	1
71	1
72	63
73	171
74	45
75	15
76	9
77	1
78	3
79	3
80	15
81	225
82	3
83	3
84	3
85	1
86	15
87	3
88	3
89	3
90	21
91	3
92	3
93	1
94	1
95	3
96	3
97	9
98	45
99	21
100	45

[1, 1, 1, 3, 1, 1, 1, 3, 21, 1, 1, 3, 3, 1, 1, 15, 1, 21, 3, 3, 1, 1, 1, 3, 15, 3, 3, 3, 3, 1, 1, 3, 1, 1, 1, 63, 45, 3, 3, 3, 3, 1, 15, 3, 21, 1, 1, 15, 45, 15, 1, 9, 1, 3, 1, 3, 3, 3, 3, 3, 15, 1, 21, 63, 3, 1, 9, 3, 1, 1, 1, 63, 171, 45, 15, 9, 1, 3, 3, 15, 225, 3, 3, 3, 1, 15, 3, 3, 3, 21, 3, 3, 1, 1, 3, 3, 9, 45, 21, 45]

cp's OEIS Frontend

A336455 a(n) = A335915(sigma(n)), where A335915 is a fully multiplicative sequence with a(2) = 1 and a(p) = A000265(p^2 - 1) for odd primes p, with A000265(k) giving the odd part of k.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	1
7	1
8	3
9	21
10	1
11	1
12	3
13	3
14	1
15	1
16	15
17	1
18	21
19	3
20	3
21	1
22	1
23	1
24	3
25	15
26	3
27	3
28	3
29	3
30	1
31	1
32	3
33	1
34	1
35	1
36	63
37	45
38	3
39	3
40	3
41	3
42	1
43	15
44	3
45	21
46	1
47	1
48	15
49	45
50	15
51	1
52	9
53	1
54	3
55	1
56	3
57	3
58	3
59	3
60	3
61	15
62	1
63	21
64	63
65	3
66	1
67	9
68	3
69	1
70	1
71	1
72	63
73	171
74	45
75	15
76	9
77	1
78	3
79	3
80	15
81	225
82	3
83	3
84	3
85	1
86	15
87	3
88	3
89	3
90	21
91	3
92	3
93	1
94	1
95	3
96	3
97	9
98	45
99	21
100	45

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	1
7	1
8	3
9	21
10	1
11	1
12	3
13	3
14	1
15	1
16	15
17	1
18	21
19	3
20	3
21	1
22	1
23	1
24	3
25	15
26	3
27	3
28	3
29	3
30	1
31	1
32	3
33	1
34	1
35	1
36	63
37	45
38	3
39	3
40	3
41	3
42	1
43	15
44	3
45	21
46	1
47	1
48	15
49	45
50	15
51	1
52	9
53	1
54	3
55	1
56	3
57	3
58	3
59	3
60	3
61	15
62	1
63	21
64	63
65	3
66	1
67	9
68	3
69	1
70	1
71	1
72	63
73	171
74	45
75	15
76	9
77	1
78	3
79	3
80	15
81	225
82	3
83	3
84	3
85	1
86	15
87	3
88	3
89	3
90	21
91	3
92	3
93	1
94	1
95	3
96	3
97	9
98	45
99	21
100	45

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	1
7	1
8	3
9	21
10	1
11	1
12	3
13	3
14	1
15	1
16	15
17	1
18	21
19	3
20	3
21	1
22	1
23	1
24	3
25	15
26	3
27	3
28	3
29	3
30	1
31	1
32	3
33	1
34	1
35	1
36	63
37	45
38	3
39	3
40	3
41	3
42	1
43	15
44	3
45	21
46	1
47	1
48	15
49	45
50	15
51	1
52	9
53	1
54	3
55	1
56	3
57	3
58	3
59	3
60	3
61	15
62	1
63	21
64	63
65	3
66	1
67	9
68	3
69	1
70	1
71	1
72	63
73	171
74	45
75	15
76	9
77	1
78	3
79	3
80	15
81	225
82	3
83	3
84	3
85	1
86	15
87	3
88	3
89	3
90	21
91	3
92	3
93	1
94	1
95	3
96	3
97	9
98	45
99	21
100	45