A364871 - cp's OEIS frontend

A364871 a(n) = B(n) - A(n), where A(1) = 0, B(1) = 1, and sequences A and B are the lexicographically earliest sequences that start with their respective first terms and contain no term whose binary expansion is the concatenation of any two earlier terms in that sequence.

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

[1, 1, 0, 0, 3, -4, -2, -1, -1, 4, 3, 4, 8, 8, 11, 11, 11, 1, 2, -2, -1, -11, -11, -12, -12, -7, -8, -5, -1, -2, -2, 2, -2, 0, 0, 1, 3, 6, 9, 9, 14, 10, 12, 13, 15, 19, 21, 22, 22, 25, 25, 20, 17, 11, 13, 8, 10, 6, 6, 1, 0, 4, 4, 4, 9, 8, 8, 1, 1, 1, 1, -6, -12, -11, -15, -21, -18, -20]

cp's OEIS Frontend

A364871 a(n) = B(n) - A(n), where A(1) = 0, B(1) = 1, and sequences A and B are the lexicographically earliest sequences that start with their respective first terms and contain no term whose binary expansion is the concatenation of any two earlier terms in that sequence.

Table of values

List of values

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

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

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