A242869 - cp's OEIS frontend

A242869 Largest integer m < n having a binary expansion that is a prefix and a suffix of the binary expansion of n; a(0)=0.

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

[0, 0, 0, 1, 0, 1, 0, 3, 0, 1, 2, 1, 0, 1, 0, 7, 0, 1, 2, 1, 0, 5, 2, 1, 0, 1, 0, 3, 0, 1, 0, 15, 0, 1, 2, 1, 4, 1, 2, 1, 0, 1, 10, 1, 0, 5, 2, 1, 0, 1, 0, 3, 0, 1, 6, 3, 0, 1, 0, 3, 0, 1, 0, 31, 0, 1, 2, 1, 4, 1, 2, 1, 0, 9, 2, 1, 4, 1, 2, 1, 0, 1, 2, 1, 0, 21]

cp's OEIS Frontend

A242869 Largest integer m < n having a binary expansion that is a prefix and a suffix of the binary expansion of n; a(0)=0.

Table of values

List of values

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

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

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