A070331 - cp's OEIS frontend

A070331 Numbers in which suffixing or inserting a 0 anywhere yields only composite numbers.

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

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 73, 74, 75, 76, 77, 78, 80, 81, 82, 83, 84, 85]

cp's OEIS Frontend

A070331 Numbers in which suffixing or inserting a 0 anywhere yields only composite numbers.

Table of values

List of values

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

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

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