A135020 - cp's OEIS frontend

A135020 Each natural number is followed by its reversal.

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	4
9	5
10	5
11	6
12	6
13	7
14	7
15	8
16	8
17	9
18	9
19	10
20	1
21	11
22	11
23	12
24	21
25	13
26	31
27	14
28	41
29	15
30	51
31	16
32	61
33	17
34	71
35	18
36	81
37	19
38	91
39	20
40	2
41	21
42	12
43	22
44	22
45	23
46	32
47	24
48	42
49	25
50	52
51	26
52	62
53	27
54	72
55	28
56	82
57	29
58	92
59	30
60	3
61	31
62	13
63	32
64	23
65	33
66	33
67	34
68	43
69	35
70	53
71	36
72	63
73	37
74	73
75	38
76	83
77	39
78	93

[1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 1, 11, 11, 12, 21, 13, 31, 14, 41, 15, 51, 16, 61, 17, 71, 18, 81, 19, 91, 20, 2, 21, 12, 22, 22, 23, 32, 24, 42, 25, 52, 26, 62, 27, 72, 28, 82, 29, 92, 30, 3, 31, 13, 32, 23, 33, 33, 34, 43, 35, 53, 36, 63, 37, 73, 38, 83, 39, 93]

cp's OEIS Frontend

A135020 Each natural number is followed by its reversal.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	4
9	5
10	5
11	6
12	6
13	7
14	7
15	8
16	8
17	9
18	9
19	10
20	1
21	11
22	11
23	12
24	21
25	13
26	31
27	14
28	41
29	15
30	51
31	16
32	61
33	17
34	71
35	18
36	81
37	19
38	91
39	20
40	2
41	21
42	12
43	22
44	22
45	23
46	32
47	24
48	42
49	25
50	52
51	26
52	62
53	27
54	72
55	28
56	82
57	29
58	92
59	30
60	3
61	31
62	13
63	32
64	23
65	33
66	33
67	34
68	43
69	35
70	53
71	36
72	63
73	37
74	73
75	38
76	83
77	39
78	93

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	4
9	5
10	5
11	6
12	6
13	7
14	7
15	8
16	8
17	9
18	9
19	10
20	1
21	11
22	11
23	12
24	21
25	13
26	31
27	14
28	41
29	15
30	51
31	16
32	61
33	17
34	71
35	18
36	81
37	19
38	91
39	20
40	2
41	21
42	12
43	22
44	22
45	23
46	32
47	24
48	42
49	25
50	52
51	26
52	62
53	27
54	72
55	28
56	82
57	29
58	92
59	30
60	3
61	31
62	13
63	32
64	23
65	33
66	33
67	34
68	43
69	35
70	53
71	36
72	63
73	37
74	73
75	38
76	83
77	39
78	93

n	a(n)
1	1
2	1
3	2
4	2
5	3
6	3
7	4
8	4
9	5
10	5
11	6
12	6
13	7
14	7
15	8
16	8
17	9
18	9
19	10
20	1
21	11
22	11
23	12
24	21
25	13
26	31
27	14
28	41
29	15
30	51
31	16
32	61
33	17
34	71
35	18
36	81
37	19
38	91
39	20
40	2
41	21
42	12
43	22
44	22
45	23
46	32
47	24
48	42
49	25
50	52
51	26
52	62
53	27
54	72
55	28
56	82
57	29
58	92
59	30
60	3
61	31
62	13
63	32
64	23
65	33
66	33
67	34
68	43
69	35
70	53
71	36
72	63
73	37
74	73
75	38
76	83
77	39
78	93