A160380 - cp's OEIS frontend

A160380 a(0) = 0; for n >= 1, a(n) = number of 0's in base-4 representation of n.

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

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

cp's OEIS Frontend

A160380 a(0) = 0; for n >= 1, a(n) = number of 0's in base-4 representation of n.

Table of values

List of values

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

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

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