A336928 - cp's OEIS frontend

A336928 a(n) = A329697(sigma(n)), where A329697 is totally additive with a(2) = 0 and a(p) = 1 + a(p-1) for odd primes.

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

[0, 1, 0, 2, 1, 1, 0, 2, 2, 2, 1, 2, 2, 1, 1, 3, 2, 3, 1, 3, 0, 2, 1, 2, 3, 3, 1, 2, 2, 2, 0, 4, 1, 3, 1, 4, 3, 2, 2, 3, 3, 1, 2, 3, 3, 2, 1, 3, 4, 4, 2, 4, 3, 2, 2, 2, 1, 3, 2, 3, 3, 1, 2, 5, 3, 2, 1, 4, 1, 2, 2, 4, 3, 4, 3, 3, 1, 3, 1, 4, 4, 4, 3, 2, 3, 3, 2, 3, 3, 4, 2, 3, 0, 2, 2, 4, 4, 5, 3, 5, 2, 3, 2, 4, 1]

cp's OEIS Frontend

A336928 a(n) = A329697(sigma(n)), where A329697 is totally additive with a(2) = 0 and a(p) = 1 + a(p-1) for odd primes.

Table of values

List of values

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

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

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