A265513 - cp's OEIS frontend

A265513 a(n) = largest base-4 palindrome m <= n such that every base-4 digit of m is <= the corresponding digit of n; m is written in base 10.

n	a(n)
0	0
1	1
2	2
3	3
4	0
5	5
6	5
7	5
8	0
9	5
10	10
11	10
12	0
13	5
14	10
15	15
16	0
17	17
18	17
19	17
20	0
21	21
22	21
23	21
24	0
25	25
26	25
27	25
28	0
29	29
30	29
31	29
32	0
33	17
34	34
35	34
36	0
37	21
38	38
39	38
40	0
41	25
42	42
43	42
44	0
45	29
46	46
47	46
48	0
49	17
50	34
51	51
52	0
53	21
54	38
55	55
56	0
57	25
58	42
59	59
60	0
61	29
62	46
63	63
64	0
65	65
66	65
67	65
68	0
69	65
70	65
71	65
72	0
73	65
74	65
75	65
76	0
77	65
78	65
79	65
80	0
81	65
82	65
83	65
84	0
85	85
86	85

[0, 1, 2, 3, 0, 5, 5, 5, 0, 5, 10, 10, 0, 5, 10, 15, 0, 17, 17, 17, 0, 21, 21, 21, 0, 25, 25, 25, 0, 29, 29, 29, 0, 17, 34, 34, 0, 21, 38, 38, 0, 25, 42, 42, 0, 29, 46, 46, 0, 17, 34, 51, 0, 21, 38, 55, 0, 25, 42, 59, 0, 29, 46, 63, 0, 65, 65, 65, 0, 65, 65, 65, 0, 65, 65, 65, 0, 65, 65, 65, 0, 65, 65, 65, 0, 85, 85]

cp's OEIS Frontend

A265513 a(n) = largest base-4 palindrome m <= n such that every base-4 digit of m is <= the corresponding digit of n; m is written in base 10.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	3
4	0
5	5
6	5
7	5
8	0
9	5
10	10
11	10
12	0
13	5
14	10
15	15
16	0
17	17
18	17
19	17
20	0
21	21
22	21
23	21
24	0
25	25
26	25
27	25
28	0
29	29
30	29
31	29
32	0
33	17
34	34
35	34
36	0
37	21
38	38
39	38
40	0
41	25
42	42
43	42
44	0
45	29
46	46
47	46
48	0
49	17
50	34
51	51
52	0
53	21
54	38
55	55
56	0
57	25
58	42
59	59
60	0
61	29
62	46
63	63
64	0
65	65
66	65
67	65
68	0
69	65
70	65
71	65
72	0
73	65
74	65
75	65
76	0
77	65
78	65
79	65
80	0
81	65
82	65
83	65
84	0
85	85
86	85

n	a(n)
0	0
1	1
2	2
3	3
4	0
5	5
6	5
7	5
8	0
9	5
10	10
11	10
12	0
13	5
14	10
15	15
16	0
17	17
18	17
19	17
20	0
21	21
22	21
23	21
24	0
25	25
26	25
27	25
28	0
29	29
30	29
31	29
32	0
33	17
34	34
35	34
36	0
37	21
38	38
39	38
40	0
41	25
42	42
43	42
44	0
45	29
46	46
47	46
48	0
49	17
50	34
51	51
52	0
53	21
54	38
55	55
56	0
57	25
58	42
59	59
60	0
61	29
62	46
63	63
64	0
65	65
66	65
67	65
68	0
69	65
70	65
71	65
72	0
73	65
74	65
75	65
76	0
77	65
78	65
79	65
80	0
81	65
82	65
83	65
84	0
85	85
86	85

n	a(n)
0	0
1	1
2	2
3	3
4	0
5	5
6	5
7	5
8	0
9	5
10	10
11	10
12	0
13	5
14	10
15	15
16	0
17	17
18	17
19	17
20	0
21	21
22	21
23	21
24	0
25	25
26	25
27	25
28	0
29	29
30	29
31	29
32	0
33	17
34	34
35	34
36	0
37	21
38	38
39	38
40	0
41	25
42	42
43	42
44	0
45	29
46	46
47	46
48	0
49	17
50	34
51	51
52	0
53	21
54	38
55	55
56	0
57	25
58	42
59	59
60	0
61	29
62	46
63	63
64	0
65	65
66	65
67	65
68	0
69	65
70	65
71	65
72	0
73	65
74	65
75	65
76	0
77	65
78	65
79	65
80	0
81	65
82	65
83	65
84	0
85	85
86	85