A206922 - cp's OEIS frontend

A206922 Root of the n-th binary palindrome. Least number r > 1 such that A006995(n) can be represented by a finite or infinite number of iterations A006995(A006995(A006995(...(...(r))...).

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

[2, 2, 3, 4, 4, 6, 4, 8, 6, 10, 11, 12, 13, 14, 4, 16, 8, 18, 19, 20, 6, 22, 23, 24, 25, 26, 10, 28, 29, 30, 11, 32, 12, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 13, 46, 47, 48, 49, 50, 14, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 4, 64, 16, 66, 67, 68]

cp's OEIS Frontend

A206922 Root of the n-th binary palindrome. Least number r > 1 such that A006995(n) can be represented by a finite or infinite number of iterations A006995(A006995(A006995(...(...(r))...).

Table of values

List of values

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

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

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