A179240 - cp's OEIS frontend

A179240 a(n) is the smallest prime q > a(n-1) such that, for the previous prime p and the following prime r, the fraction (q-p)/(r-q) has denominator equal to A006843(n) (or 0, if such a prime does not exist).

n	a(n)
1	5
2	11
3	17
4	19
5	29
6	41
7	47
8	67
9	73
10	97
11	101
12	359
13	367
14	379
15	383
16	389
17	397
18	419
19	421
20	449
21	467
22	547
23	613
24	631
25	647
26	683
27	691
28	733
29	769
30	797
31	811
32	929
33	941
34	1021
35	1087
36	1153
37	1181
38	1193
39	1249
40	1709
41	1721
42	1747
43	1847
44	1889
45	2017
46	2153
47	2357

[5, 11, 17, 19, 29, 41, 47, 67, 73, 97, 101, 359, 367, 379, 383, 389, 397, 419, 421, 449, 467, 547, 613, 631, 647, 683, 691, 733, 769, 797, 811, 929, 941, 1021, 1087, 1153, 1181, 1193, 1249, 1709, 1721, 1747, 1847, 1889, 2017, 2153, 2357]

cp's OEIS Frontend

A179240 a(n) is the smallest prime q > a(n-1) such that, for the previous prime p and the following prime r, the fraction (q-p)/(r-q) has denominator equal to A006843(n) (or 0, if such a prime does not exist).

Table of values

List of values