A139355 - cp's OEIS frontend

A139355 Let the binary expansion of n be n = Sum_{k} 2^{r_k}, let e(n) be the number of r_k's that are even, o(n) the number that are odd; sequence gives max{e(n), o(n)}.

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

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

cp's OEIS Frontend

A139355 Let the binary expansion of n be n = Sum_{k} 2^{r_k}, let e(n) be the number of r_k's that are even, o(n) the number that are odd; sequence gives max{e(n), o(n)}.

Table of values

List of values

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

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

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