A306926 - cp's OEIS frontend

A306926 A(n, k) is the k-th prime p > 10 where a string of exactly n zeros can be inserted somewhere into the decimal expansion such that the resulting number is also prime; square array, read by antidiagonals, downwards.

n	a(n)
1	11
2	13
3	19
4	17
5	23
6	17
7	19
8	31
9	19
10	13
11	37
12	41
13	71
14	23
15	13
16	41
17	43
18	73
19	29
20	23
21	23
22	53
23	47
24	79
25	37
26	73
27	31
28	17
29	59
30	53
31	97
32	59
33	79
34	43
35	37
36	17
37	61
38	59
39	103
40	71
41	89
42	107
43	53
44	19
45	31
46	67
47	67
48	149
49	97
50	179
51	127
52	59
53	47
54	43
55	13
56	71
57	71
58	151
59	103
60	223
61	131
62	61
63	61

[11, 13, 19, 17, 23, 17, 19, 31, 19, 13, 37, 41, 71, 23, 13, 41, 43, 73, 29, 23, 23, 53, 47, 79, 37, 73, 31, 17, 59, 53, 97, 59, 79, 43, 37, 17, 61, 59, 103, 71, 89, 107, 53, 19, 31, 67, 67, 149, 97, 179, 127, 59, 47, 43, 13, 71, 71, 151, 103, 223, 131, 61, 61]

cp's OEIS Frontend

A306926 A(n, k) is the k-th prime p > 10 where a string of exactly n zeros can be inserted somewhere into the decimal expansion such that the resulting number is also prime; square array, read by antidiagonals, downwards.

Table of values

List of values

n	a(n)
1	11
2	13
3	19
4	17
5	23
6	17
7	19
8	31
9	19
10	13
11	37
12	41
13	71
14	23
15	13
16	41
17	43
18	73
19	29
20	23
21	23
22	53
23	47
24	79
25	37
26	73
27	31
28	17
29	59
30	53
31	97
32	59
33	79
34	43
35	37
36	17
37	61
38	59
39	103
40	71
41	89
42	107
43	53
44	19
45	31
46	67
47	67
48	149
49	97
50	179
51	127
52	59
53	47
54	43
55	13
56	71
57	71
58	151
59	103
60	223
61	131
62	61
63	61

n	a(n)
1	11
2	13
3	19
4	17
5	23
6	17
7	19
8	31
9	19
10	13
11	37
12	41
13	71
14	23
15	13
16	41
17	43
18	73
19	29
20	23
21	23
22	53
23	47
24	79
25	37
26	73
27	31
28	17
29	59
30	53
31	97
32	59
33	79
34	43
35	37
36	17
37	61
38	59
39	103
40	71
41	89
42	107
43	53
44	19
45	31
46	67
47	67
48	149
49	97
50	179
51	127
52	59
53	47
54	43
55	13
56	71
57	71
58	151
59	103
60	223
61	131
62	61
63	61

n	a(n)
1	11
2	13
3	19
4	17
5	23
6	17
7	19
8	31
9	19
10	13
11	37
12	41
13	71
14	23
15	13
16	41
17	43
18	73
19	29
20	23
21	23
22	53
23	47
24	79
25	37
26	73
27	31
28	17
29	59
30	53
31	97
32	59
33	79
34	43
35	37
36	17
37	61
38	59
39	103
40	71
41	89
42	107
43	53
44	19
45	31
46	67
47	67
48	149
49	97
50	179
51	127
52	59
53	47
54	43
55	13
56	71
57	71
58	151
59	103
60	223
61	131
62	61
63	61