A089310 - cp's OEIS frontend

A089310 Write n in binary; a(n) = number of 1's in second block of 1's from right.

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

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

cp's OEIS Frontend

A089310 Write n in binary; a(n) = number of 1's in second block of 1's from right.

Table of values

List of values

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

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

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