A036555 - cp's OEIS frontend

A036555 Hamming weight of 3n: number of 1's in binary expansion of 3n.

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

[0, 2, 2, 2, 2, 4, 2, 3, 2, 4, 4, 2, 2, 4, 3, 4, 2, 4, 4, 4, 4, 6, 2, 3, 2, 4, 4, 3, 3, 5, 4, 5, 2, 4, 4, 4, 4, 6, 4, 5, 4, 6, 6, 2, 2, 4, 3, 4, 2, 4, 4, 4, 4, 6, 3, 4, 3, 5, 5, 4, 4, 6, 5, 6, 2, 4, 4, 4, 4, 6, 4, 5, 4, 6, 6, 4, 4, 6, 5, 6, 4, 6, 6, 6, 6, 8, 2, 3, 2, 4, 4, 3, 3, 5, 4, 5, 2, 4, 4]

cp's OEIS Frontend

A036555 Hamming weight of 3n: number of 1's in binary expansion of 3n.

Table of values

List of values

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

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

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