A265520 - cp's OEIS frontend

A265520 a(n) = largest base-7 palindrome m <= n such that every base-7 digit of m is <= the corresponding digit of n; m is written in base 7.

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	0
8	11
9	11
10	11
11	11
12	11
13	11
14	0
15	11
16	22
17	22
18	22
19	22
20	22
21	0
22	11
23	22
24	33
25	33
26	33
27	33
28	0
29	11
30	22
31	33
32	44
33	44
34	44
35	0
36	11
37	22
38	33
39	44
40	55
41	55
42	0
43	11
44	22
45	33
46	44
47	55
48	66
49	0
50	101
51	101
52	101
53	101
54	101
55	101
56	0
57	111
58	111
59	111
60	111
61	111
62	111
63	0
64	121
65	121
66	121
67	121
68	121
69	121
70	0
71	131
72	131
73	131
74	131
75	131
76	131
77	0

[0, 1, 2, 3, 4, 5, 6, 0, 11, 11, 11, 11, 11, 11, 0, 11, 22, 22, 22, 22, 22, 0, 11, 22, 33, 33, 33, 33, 0, 11, 22, 33, 44, 44, 44, 0, 11, 22, 33, 44, 55, 55, 0, 11, 22, 33, 44, 55, 66, 0, 101, 101, 101, 101, 101, 101, 0, 111, 111, 111, 111, 111, 111, 0, 121, 121, 121, 121, 121, 121, 0, 131, 131, 131, 131, 131, 131, 0]

cp's OEIS Frontend

A265520 a(n) = largest base-7 palindrome m <= n such that every base-7 digit of m is <= the corresponding digit of n; m is written in base 7.

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	0
8	11
9	11
10	11
11	11
12	11
13	11
14	0
15	11
16	22
17	22
18	22
19	22
20	22
21	0
22	11
23	22
24	33
25	33
26	33
27	33
28	0
29	11
30	22
31	33
32	44
33	44
34	44
35	0
36	11
37	22
38	33
39	44
40	55
41	55
42	0
43	11
44	22
45	33
46	44
47	55
48	66
49	0
50	101
51	101
52	101
53	101
54	101
55	101
56	0
57	111
58	111
59	111
60	111
61	111
62	111
63	0
64	121
65	121
66	121
67	121
68	121
69	121
70	0
71	131
72	131
73	131
74	131
75	131
76	131
77	0

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	0
8	11
9	11
10	11
11	11
12	11
13	11
14	0
15	11
16	22
17	22
18	22
19	22
20	22
21	0
22	11
23	22
24	33
25	33
26	33
27	33
28	0
29	11
30	22
31	33
32	44
33	44
34	44
35	0
36	11
37	22
38	33
39	44
40	55
41	55
42	0
43	11
44	22
45	33
46	44
47	55
48	66
49	0
50	101
51	101
52	101
53	101
54	101
55	101
56	0
57	111
58	111
59	111
60	111
61	111
62	111
63	0
64	121
65	121
66	121
67	121
68	121
69	121
70	0
71	131
72	131
73	131
74	131
75	131
76	131
77	0

n	a(n)
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	0
8	11
9	11
10	11
11	11
12	11
13	11
14	0
15	11
16	22
17	22
18	22
19	22
20	22
21	0
22	11
23	22
24	33
25	33
26	33
27	33
28	0
29	11
30	22
31	33
32	44
33	44
34	44
35	0
36	11
37	22
38	33
39	44
40	55
41	55
42	0
43	11
44	22
45	33
46	44
47	55
48	66
49	0
50	101
51	101
52	101
53	101
54	101
55	101
56	0
57	111
58	111
59	111
60	111
61	111
62	111
63	0
64	121
65	121
66	121
67	121
68	121
69	121
70	0
71	131
72	131
73	131
74	131
75	131
76	131
77	0