A326316 - cp's OEIS frontend

A326316 Lexicographically earliest sequence of distinct terms such that the digits of a(n) and a(n+1) sum up to a prime and a(n) + a(n+1) is also 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	22
13	25
14	28
15	43
16	24
17	23
18	44
19	27
20	26
21	41
22	42
23	29
24	60
25	47
26	62
27	45
28	64
29	49
30	40
31	61
32	46
33	63
34	68
35	69
36	80
37	83
38	48
39	65
40	66
41	113
42	84
43	89
44	110
45	81
46	82
47	67
48	112
49	85
50	88
51	111
52	86
53	87
54	152
55	117
56	116
57	135
58	134
59	137
60	114
61	115
62	118
63	133
64	130
65	139
66	132
67	119
68	138
69	131
70	150
71	157
72	136
73	171
74	176
75	177
76	170

[1, 2, 3, 4, 7, 6, 5, 8, 9, 20, 21, 22, 25, 28, 43, 24, 23, 44, 27, 26, 41, 42, 29, 60, 47, 62, 45, 64, 49, 40, 61, 46, 63, 68, 69, 80, 83, 48, 65, 66, 113, 84, 89, 110, 81, 82, 67, 112, 85, 88, 111, 86, 87, 152, 117, 116, 135, 134, 137, 114, 115, 118, 133, 130, 139, 132, 119, 138, 131, 150, 157, 136, 171, 176, 177, 170]

cp's OEIS Frontend

A326316 Lexicographically earliest sequence of distinct terms such that the digits of a(n) and a(n+1) sum up to a prime and a(n) + a(n+1) is also 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	22
13	25
14	28
15	43
16	24
17	23
18	44
19	27
20	26
21	41
22	42
23	29
24	60
25	47
26	62
27	45
28	64
29	49
30	40
31	61
32	46
33	63
34	68
35	69
36	80
37	83
38	48
39	65
40	66
41	113
42	84
43	89
44	110
45	81
46	82
47	67
48	112
49	85
50	88
51	111
52	86
53	87
54	152
55	117
56	116
57	135
58	134
59	137
60	114
61	115
62	118
63	133
64	130
65	139
66	132
67	119
68	138
69	131
70	150
71	157
72	136
73	171
74	176
75	177
76	170

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	22
13	25
14	28
15	43
16	24
17	23
18	44
19	27
20	26
21	41
22	42
23	29
24	60
25	47
26	62
27	45
28	64
29	49
30	40
31	61
32	46
33	63
34	68
35	69
36	80
37	83
38	48
39	65
40	66
41	113
42	84
43	89
44	110
45	81
46	82
47	67
48	112
49	85
50	88
51	111
52	86
53	87
54	152
55	117
56	116
57	135
58	134
59	137
60	114
61	115
62	118
63	133
64	130
65	139
66	132
67	119
68	138
69	131
70	150
71	157
72	136
73	171
74	176
75	177
76	170

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	22
13	25
14	28
15	43
16	24
17	23
18	44
19	27
20	26
21	41
22	42
23	29
24	60
25	47
26	62
27	45
28	64
29	49
30	40
31	61
32	46
33	63
34	68
35	69
36	80
37	83
38	48
39	65
40	66
41	113
42	84
43	89
44	110
45	81
46	82
47	67
48	112
49	85
50	88
51	111
52	86
53	87
54	152
55	117
56	116
57	135
58	134
59	137
60	114
61	115
62	118
63	133
64	130
65	139
66	132
67	119
68	138
69	131
70	150
71	157
72	136
73	171
74	176
75	177
76	170