A091974 - cp's OEIS frontend

A091974 Let R_{k}(n) = the digit reversal of n in base k (R_{k}(n) is written in base 10). a(n) is the number of distinct values of R_{k}(n) arising if k=2,..,n+1.

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

[1, 1, 2, 2, 2, 3, 5, 5, 5, 6, 7, 9, 9, 11, 11, 12, 11, 14, 13, 16, 16, 17, 19, 21, 19, 22, 22, 21, 23, 24, 27, 27, 27, 29, 29, 32, 29, 35, 33, 36, 32, 38, 37, 41, 39, 41, 40, 42, 41, 45, 43, 45, 46, 48, 47, 49, 50, 52, 52, 55, 53, 57, 58, 56, 57, 59, 60, 61]

cp's OEIS Frontend

A091974 Let R_{k}(n) = the digit reversal of n in base k (R_{k}(n) is written in base 10). a(n) is the number of distinct values of R_{k}(n) arising if k=2,..,n+1.

Table of values

List of values

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

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

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