A139354 - cp's OEIS frontend

A139354 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 min{e(n), o(n)}.

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

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

cp's OEIS Frontend

A139354 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 min{e(n), o(n)}.

Table of values

List of values

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

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

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