A309709 - cp's OEIS frontend

A309709 Number of binary digits that change when n is multiplied by 4.

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

[0, 2, 2, 4, 2, 2, 4, 4, 2, 4, 2, 4, 4, 4, 4, 4, 2, 4, 4, 6, 2, 2, 4, 4, 4, 6, 4, 6, 4, 4, 4, 4, 2, 4, 4, 6, 4, 4, 6, 6, 2, 4, 2, 4, 4, 4, 4, 4, 4, 6, 6, 8, 4, 4, 6, 6, 4, 6, 4, 6, 4, 4, 4, 4, 2, 4, 4, 6, 4, 4, 6, 6, 4, 6, 4, 6, 6, 6, 6, 6, 2, 4, 4, 6, 2, 2, 4, 4]

cp's OEIS Frontend

A309709 Number of binary digits that change when n is multiplied by 4.

Table of values

List of values

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

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

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