A374991 - cp's OEIS frontend

A374991 Lexicographically earliest sequence of distinct nonnegative integers such that the concatenation of the binary expansions of two consecutive terms, in at least one way, and after removal of trailing digits, is palindromic.

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	7
6	6
7	11
8	5
9	10
10	8
11	13
12	16
13	15
14	12
15	19
16	9
17	18
18	36
19	32
20	22
21	26
22	23
23	14
24	28
25	31
26	24
27	29
28	46
29	58
30	47
31	20
32	37
33	41
34	74
35	72
36	39
37	25
38	38
39	50
40	76
41	51
42	102
43	103
44	57
45	48
46	54
47	27
48	44
49	52
50	75
51	82
52	64
53	42
54	21
55	43
56	53
57	86
58	40
59	45
60	80
61	89
62	77
63	144
64	79
65	60
66	30

[0, 1, 2, 3, 4, 7, 6, 11, 5, 10, 8, 13, 16, 15, 12, 19, 9, 18, 36, 32, 22, 26, 23, 14, 28, 31, 24, 29, 46, 58, 47, 20, 37, 41, 74, 72, 39, 25, 38, 50, 76, 51, 102, 103, 57, 48, 54, 27, 44, 52, 75, 82, 64, 42, 21, 43, 53, 86, 40, 45, 80, 89, 77, 144, 79, 60, 30]

cp's OEIS Frontend

A374991 Lexicographically earliest sequence of distinct nonnegative integers such that the concatenation of the binary expansions of two consecutive terms, in at least one way, and after removal of trailing digits, is palindromic.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	7
6	6
7	11
8	5
9	10
10	8
11	13
12	16
13	15
14	12
15	19
16	9
17	18
18	36
19	32
20	22
21	26
22	23
23	14
24	28
25	31
26	24
27	29
28	46
29	58
30	47
31	20
32	37
33	41
34	74
35	72
36	39
37	25
38	38
39	50
40	76
41	51
42	102
43	103
44	57
45	48
46	54
47	27
48	44
49	52
50	75
51	82
52	64
53	42
54	21
55	43
56	53
57	86
58	40
59	45
60	80
61	89
62	77
63	144
64	79
65	60
66	30

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	7
6	6
7	11
8	5
9	10
10	8
11	13
12	16
13	15
14	12
15	19
16	9
17	18
18	36
19	32
20	22
21	26
22	23
23	14
24	28
25	31
26	24
27	29
28	46
29	58
30	47
31	20
32	37
33	41
34	74
35	72
36	39
37	25
38	38
39	50
40	76
41	51
42	102
43	103
44	57
45	48
46	54
47	27
48	44
49	52
50	75
51	82
52	64
53	42
54	21
55	43
56	53
57	86
58	40
59	45
60	80
61	89
62	77
63	144
64	79
65	60
66	30

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	7
6	6
7	11
8	5
9	10
10	8
11	13
12	16
13	15
14	12
15	19
16	9
17	18
18	36
19	32
20	22
21	26
22	23
23	14
24	28
25	31
26	24
27	29
28	46
29	58
30	47
31	20
32	37
33	41
34	74
35	72
36	39
37	25
38	38
39	50
40	76
41	51
42	102
43	103
44	57
45	48
46	54
47	27
48	44
49	52
50	75
51	82
52	64
53	42
54	21
55	43
56	53
57	86
58	40
59	45
60	80
61	89
62	77
63	144
64	79
65	60
66	30