A182178 - cp's OEIS frontend

A182178 Beginning with 1, smallest positive integer not yet in the sequence such that two adjacent digits of the sequence (also ignoring commas between terms) sum to a prime.

n	a(n)
1	1
2	2
3	3
4	4
5	7
6	6
7	5
8	8
9	9
10	20
11	21
12	11
13	12
14	14
15	16
16	50
17	23
18	25
19	29
20	41
21	43
22	47
23	49
24	83
25	85
26	61
27	65
28	67
29	411
30	111
31	112
32	30
33	32
34	34
35	38
36	52
37	56
38	58
39	92
40	94
41	70
42	74
43	76
44	114
45	98
46	302
47	116
48	120
49	202
50	121
51	123
52	89
53	203
54	205
55	207
56	412
57	125
58	211
59	129
60	212
61	141
62	143

[1, 2, 3, 4, 7, 6, 5, 8, 9, 20, 21, 11, 12, 14, 16, 50, 23, 25, 29, 41, 43, 47, 49, 83, 85, 61, 65, 67, 411, 111, 112, 30, 32, 34, 38, 52, 56, 58, 92, 94, 70, 74, 76, 114, 98, 302, 116, 120, 202, 121, 123, 89, 203, 205, 207, 412, 125, 211, 129, 212, 141, 143]

cp's OEIS Frontend

A182178 Beginning with 1, smallest positive integer not yet in the sequence such that two adjacent digits of the sequence (also ignoring commas between terms) sum to a prime.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	7
6	6
7	5
8	8
9	9
10	20
11	21
12	11
13	12
14	14
15	16
16	50
17	23
18	25
19	29
20	41
21	43
22	47
23	49
24	83
25	85
26	61
27	65
28	67
29	411
30	111
31	112
32	30
33	32
34	34
35	38
36	52
37	56
38	58
39	92
40	94
41	70
42	74
43	76
44	114
45	98
46	302
47	116
48	120
49	202
50	121
51	123
52	89
53	203
54	205
55	207
56	412
57	125
58	211
59	129
60	212
61	141
62	143

n	a(n)
1	1
2	2
3	3
4	4
5	7
6	6
7	5
8	8
9	9
10	20
11	21
12	11
13	12
14	14
15	16
16	50
17	23
18	25
19	29
20	41
21	43
22	47
23	49
24	83
25	85
26	61
27	65
28	67
29	411
30	111
31	112
32	30
33	32
34	34
35	38
36	52
37	56
38	58
39	92
40	94
41	70
42	74
43	76
44	114
45	98
46	302
47	116
48	120
49	202
50	121
51	123
52	89
53	203
54	205
55	207
56	412
57	125
58	211
59	129
60	212
61	141
62	143

n	a(n)
1	1
2	2
3	3
4	4
5	7
6	6
7	5
8	8
9	9
10	20
11	21
12	11
13	12
14	14
15	16
16	50
17	23
18	25
19	29
20	41
21	43
22	47
23	49
24	83
25	85
26	61
27	65
28	67
29	411
30	111
31	112
32	30
33	32
34	34
35	38
36	52
37	56
38	58
39	92
40	94
41	70
42	74
43	76
44	114
45	98
46	302
47	116
48	120
49	202
50	121
51	123
52	89
53	203
54	205
55	207
56	412
57	125
58	211
59	129
60	212
61	141
62	143