A286357 - cp's OEIS frontend

A286357 One more than the exponent of the highest power of 2 dividing sigma(n): a(n) = A001511(A000203(n)).

n	a(n)
1	1
2	1
3	3
4	1
5	2
6	3
7	4
8	1
9	1
10	2
11	3
12	3
13	2
14	4
15	4
16	1
17	2
18	1
19	3
20	2
21	6
22	3
23	4
24	3
25	1
26	2
27	4
28	4
29	2
30	4
31	6
32	1
33	5
34	2
35	5
36	1
37	2
38	3
39	4
40	2
41	2
42	6
43	3
44	3
45	2
46	4
47	5
48	3
49	1
50	1
51	4
52	2
53	2
54	4
55	4
56	4
57	5
58	2
59	3
60	4
61	2
62	6
63	4
64	1
65	3
66	5
67	3
68	2
69	6
70	5
71	4
72	1
73	2
74	2
75	3
76	3
77	6
78	4
79	5
80	2
81	1
82	2
83	3
84	6
85	3
86	3
87	4
88	3
89	2
90	2
91	5
92	4
93	8
94	5
95	4
96	3
97	2
98	1
99	3
100	1
101	2
102	4
103	4
104	2
105	7
106	2
107	3
108	4
109	2
110	4
111	4
112	4
113	2
114	5
115	5
116	2
117	2
118	3
119	5
120	4

[1, 1, 3, 1, 2, 3, 4, 1, 1, 2, 3, 3, 2, 4, 4, 1, 2, 1, 3, 2, 6, 3, 4, 3, 1, 2, 4, 4, 2, 4, 6, 1, 5, 2, 5, 1, 2, 3, 4, 2, 2, 6, 3, 3, 2, 4, 5, 3, 1, 1, 4, 2, 2, 4, 4, 4, 5, 2, 3, 4, 2, 6, 4, 1, 3, 5, 3, 2, 6, 5, 4, 1, 2, 2, 3, 3, 6, 4, 5, 2, 1, 2, 3, 6, 3, 3, 4, 3, 2, 2, 5, 4, 8, 5, 4, 3, 2, 1, 3, 1, 2, 4, 4, 2, 7, 2, 3, 4, 2, 4, 4, 4, 2, 5, 5, 2, 2, 3, 5, 4]

cp's OEIS Frontend

A286357 One more than the exponent of the highest power of 2 dividing sigma(n): a(n) = A001511(A000203(n)).

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	1
5	2
6	3
7	4
8	1
9	1
10	2
11	3
12	3
13	2
14	4
15	4
16	1
17	2
18	1
19	3
20	2
21	6
22	3
23	4
24	3
25	1
26	2
27	4
28	4
29	2
30	4
31	6
32	1
33	5
34	2
35	5
36	1
37	2
38	3
39	4
40	2
41	2
42	6
43	3
44	3
45	2
46	4
47	5
48	3
49	1
50	1
51	4
52	2
53	2
54	4
55	4
56	4
57	5
58	2
59	3
60	4
61	2
62	6
63	4
64	1
65	3
66	5
67	3
68	2
69	6
70	5
71	4
72	1
73	2
74	2
75	3
76	3
77	6
78	4
79	5
80	2
81	1
82	2
83	3
84	6
85	3
86	3
87	4
88	3
89	2
90	2
91	5
92	4
93	8
94	5
95	4
96	3
97	2
98	1
99	3
100	1
101	2
102	4
103	4
104	2
105	7
106	2
107	3
108	4
109	2
110	4
111	4
112	4
113	2
114	5
115	5
116	2
117	2
118	3
119	5
120	4

n	a(n)
1	1
2	1
3	3
4	1
5	2
6	3
7	4
8	1
9	1
10	2
11	3
12	3
13	2
14	4
15	4
16	1
17	2
18	1
19	3
20	2
21	6
22	3
23	4
24	3
25	1
26	2
27	4
28	4
29	2
30	4
31	6
32	1
33	5
34	2
35	5
36	1
37	2
38	3
39	4
40	2
41	2
42	6
43	3
44	3
45	2
46	4
47	5
48	3
49	1
50	1
51	4
52	2
53	2
54	4
55	4
56	4
57	5
58	2
59	3
60	4
61	2
62	6
63	4
64	1
65	3
66	5
67	3
68	2
69	6
70	5
71	4
72	1
73	2
74	2
75	3
76	3
77	6
78	4
79	5
80	2
81	1
82	2
83	3
84	6
85	3
86	3
87	4
88	3
89	2
90	2
91	5
92	4
93	8
94	5
95	4
96	3
97	2
98	1
99	3
100	1
101	2
102	4
103	4
104	2
105	7
106	2
107	3
108	4
109	2
110	4
111	4
112	4
113	2
114	5
115	5
116	2
117	2
118	3
119	5
120	4

n	a(n)
1	1
2	1
3	3
4	1
5	2
6	3
7	4
8	1
9	1
10	2
11	3
12	3
13	2
14	4
15	4
16	1
17	2
18	1
19	3
20	2
21	6
22	3
23	4
24	3
25	1
26	2
27	4
28	4
29	2
30	4
31	6
32	1
33	5
34	2
35	5
36	1
37	2
38	3
39	4
40	2
41	2
42	6
43	3
44	3
45	2
46	4
47	5
48	3
49	1
50	1
51	4
52	2
53	2
54	4
55	4
56	4
57	5
58	2
59	3
60	4
61	2
62	6
63	4
64	1
65	3
66	5
67	3
68	2
69	6
70	5
71	4
72	1
73	2
74	2
75	3
76	3
77	6
78	4
79	5
80	2
81	1
82	2
83	3
84	6
85	3
86	3
87	4
88	3
89	2
90	2
91	5
92	4
93	8
94	5
95	4
96	3
97	2
98	1
99	3
100	1
101	2
102	4
103	4
104	2
105	7
106	2
107	3
108	4
109	2
110	4
111	4
112	4
113	2
114	5
115	5
116	2
117	2
118	3
119	5
120	4