A285099 - cp's OEIS frontend

A285099 a(n) is the zero-based index of the second least significant 1-bit in the base-2 representation of n, or 0 if there are fewer than two 1-bits in n.

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	2
6	2
7	1
8	0
9	3
10	3
11	1
12	3
13	2
14	2
15	1
16	0
17	4
18	4
19	1
20	4
21	2
22	2
23	1
24	4
25	3
26	3
27	1
28	3
29	2
30	2
31	1
32	0
33	5
34	5
35	1
36	5
37	2
38	2
39	1
40	5
41	3
42	3
43	1
44	3
45	2
46	2
47	1
48	5
49	4
50	4
51	1
52	4
53	2
54	2
55	1
56	4
57	3
58	3
59	1
60	3
61	2
62	2
63	1
64	0
65	6
66	6
67	1
68	6
69	2
70	2
71	1
72	6
73	3
74	3
75	1
76	3
77	2
78	2
79	1
80	6
81	4
82	4
83	1
84	4
85	2
86	2
87	1
88	4
89	3
90	3
91	1
92	3
93	2
94	2
95	1
96	6
97	5
98	5
99	1
100	5
101	2
102	2
103	1
104	5
105	3
106	3
107	1
108	3
109	2
110	2
111	1
112	5
113	4
114	4
115	1
116	4
117	2
118	2
119	1
120	4

[0, 0, 0, 1, 0, 2, 2, 1, 0, 3, 3, 1, 3, 2, 2, 1, 0, 4, 4, 1, 4, 2, 2, 1, 4, 3, 3, 1, 3, 2, 2, 1, 0, 5, 5, 1, 5, 2, 2, 1, 5, 3, 3, 1, 3, 2, 2, 1, 5, 4, 4, 1, 4, 2, 2, 1, 4, 3, 3, 1, 3, 2, 2, 1, 0, 6, 6, 1, 6, 2, 2, 1, 6, 3, 3, 1, 3, 2, 2, 1, 6, 4, 4, 1, 4, 2, 2, 1, 4, 3, 3, 1, 3, 2, 2, 1, 6, 5, 5, 1, 5, 2, 2, 1, 5, 3, 3, 1, 3, 2, 2, 1, 5, 4, 4, 1, 4, 2, 2, 1, 4]

cp's OEIS Frontend

A285099 a(n) is the zero-based index of the second least significant 1-bit in the base-2 representation of n, or 0 if there are fewer than two 1-bits in n.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	2
6	2
7	1
8	0
9	3
10	3
11	1
12	3
13	2
14	2
15	1
16	0
17	4
18	4
19	1
20	4
21	2
22	2
23	1
24	4
25	3
26	3
27	1
28	3
29	2
30	2
31	1
32	0
33	5
34	5
35	1
36	5
37	2
38	2
39	1
40	5
41	3
42	3
43	1
44	3
45	2
46	2
47	1
48	5
49	4
50	4
51	1
52	4
53	2
54	2
55	1
56	4
57	3
58	3
59	1
60	3
61	2
62	2
63	1
64	0
65	6
66	6
67	1
68	6
69	2
70	2
71	1
72	6
73	3
74	3
75	1
76	3
77	2
78	2
79	1
80	6
81	4
82	4
83	1
84	4
85	2
86	2
87	1
88	4
89	3
90	3
91	1
92	3
93	2
94	2
95	1
96	6
97	5
98	5
99	1
100	5
101	2
102	2
103	1
104	5
105	3
106	3
107	1
108	3
109	2
110	2
111	1
112	5
113	4
114	4
115	1
116	4
117	2
118	2
119	1
120	4

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	2
6	2
7	1
8	0
9	3
10	3
11	1
12	3
13	2
14	2
15	1
16	0
17	4
18	4
19	1
20	4
21	2
22	2
23	1
24	4
25	3
26	3
27	1
28	3
29	2
30	2
31	1
32	0
33	5
34	5
35	1
36	5
37	2
38	2
39	1
40	5
41	3
42	3
43	1
44	3
45	2
46	2
47	1
48	5
49	4
50	4
51	1
52	4
53	2
54	2
55	1
56	4
57	3
58	3
59	1
60	3
61	2
62	2
63	1
64	0
65	6
66	6
67	1
68	6
69	2
70	2
71	1
72	6
73	3
74	3
75	1
76	3
77	2
78	2
79	1
80	6
81	4
82	4
83	1
84	4
85	2
86	2
87	1
88	4
89	3
90	3
91	1
92	3
93	2
94	2
95	1
96	6
97	5
98	5
99	1
100	5
101	2
102	2
103	1
104	5
105	3
106	3
107	1
108	3
109	2
110	2
111	1
112	5
113	4
114	4
115	1
116	4
117	2
118	2
119	1
120	4

n	a(n)
0	0
1	0
2	0
3	1
4	0
5	2
6	2
7	1
8	0
9	3
10	3
11	1
12	3
13	2
14	2
15	1
16	0
17	4
18	4
19	1
20	4
21	2
22	2
23	1
24	4
25	3
26	3
27	1
28	3
29	2
30	2
31	1
32	0
33	5
34	5
35	1
36	5
37	2
38	2
39	1
40	5
41	3
42	3
43	1
44	3
45	2
46	2
47	1
48	5
49	4
50	4
51	1
52	4
53	2
54	2
55	1
56	4
57	3
58	3
59	1
60	3
61	2
62	2
63	1
64	0
65	6
66	6
67	1
68	6
69	2
70	2
71	1
72	6
73	3
74	3
75	1
76	3
77	2
78	2
79	1
80	6
81	4
82	4
83	1
84	4
85	2
86	2
87	1
88	4
89	3
90	3
91	1
92	3
93	2
94	2
95	1
96	6
97	5
98	5
99	1
100	5
101	2
102	2
103	1
104	5
105	3
106	3
107	1
108	3
109	2
110	2
111	1
112	5
113	4
114	4
115	1
116	4
117	2
118	2
119	1
120	4