A071249 - cp's OEIS frontend

A071249 Numbers k such that gcd(k, R(k)) > 1, where R(k) (A004086) is the digit reversal of k.

n	a(n)
1	2
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	11
10	12
11	15
12	18
13	20
14	21
15	22
16	24
17	26
18	27
19	28
20	30
21	33
22	36
23	39
24	40
25	42
26	44
27	45
28	46
29	48
30	50
31	51
32	54
33	55
34	57
35	60
36	62
37	63
38	64
39	66
40	68
41	69
42	70
43	72
44	75
45	77
46	78
47	80
48	81
49	82
50	84
51	86
52	87
53	88
54	90
55	93
56	96
57	99
58	101
59	102
60	105
61	108
62	110
63	111
64	114
65	117
66	120
67	121

[2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 15, 18, 20, 21, 22, 24, 26, 27, 28, 30, 33, 36, 39, 40, 42, 44, 45, 46, 48, 50, 51, 54, 55, 57, 60, 62, 63, 64, 66, 68, 69, 70, 72, 75, 77, 78, 80, 81, 82, 84, 86, 87, 88, 90, 93, 96, 99, 101, 102, 105, 108, 110, 111, 114, 117, 120, 121]

cp's OEIS Frontend

A071249 Numbers k such that gcd(k, R(k)) > 1, where R(k) (A004086) is the digit reversal of k.

Table of values

List of values

n	a(n)
1	2
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	11
10	12
11	15
12	18
13	20
14	21
15	22
16	24
17	26
18	27
19	28
20	30
21	33
22	36
23	39
24	40
25	42
26	44
27	45
28	46
29	48
30	50
31	51
32	54
33	55
34	57
35	60
36	62
37	63
38	64
39	66
40	68
41	69
42	70
43	72
44	75
45	77
46	78
47	80
48	81
49	82
50	84
51	86
52	87
53	88
54	90
55	93
56	96
57	99
58	101
59	102
60	105
61	108
62	110
63	111
64	114
65	117
66	120
67	121

n	a(n)
1	2
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	11
10	12
11	15
12	18
13	20
14	21
15	22
16	24
17	26
18	27
19	28
20	30
21	33
22	36
23	39
24	40
25	42
26	44
27	45
28	46
29	48
30	50
31	51
32	54
33	55
34	57
35	60
36	62
37	63
38	64
39	66
40	68
41	69
42	70
43	72
44	75
45	77
46	78
47	80
48	81
49	82
50	84
51	86
52	87
53	88
54	90
55	93
56	96
57	99
58	101
59	102
60	105
61	108
62	110
63	111
64	114
65	117
66	120
67	121

n	a(n)
1	2
2	3
3	4
4	5
5	6
6	7
7	8
8	9
9	11
10	12
11	15
12	18
13	20
14	21
15	22
16	24
17	26
18	27
19	28
20	30
21	33
22	36
23	39
24	40
25	42
26	44
27	45
28	46
29	48
30	50
31	51
32	54
33	55
34	57
35	60
36	62
37	63
38	64
39	66
40	68
41	69
42	70
43	72
44	75
45	77
46	78
47	80
48	81
49	82
50	84
51	86
52	87
53	88
54	90
55	93
56	96
57	99
58	101
59	102
60	105
61	108
62	110
63	111
64	114
65	117
66	120
67	121