A179328 - cp's OEIS frontend

A179328 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 prime(n) (or 0, if such a prime does not exist).

n	a(n)
1	3
2	23
3	139
4	293
5	1129
6	2477
7	8467
8	30593
9	81463
10	85933
11	190409
12	404597
13	535399
14	840353
15	1100977
16	2127163
17	4640599
18	6613631
19	6958667
20	10343761
21	24120233
22	49269581
23	83751121
24	101649649
25	166726367
26	273469741
27	310845683
28	568951459

[3, 23, 139, 293, 1129, 2477, 8467, 30593, 81463, 85933, 190409, 404597, 535399, 840353, 1100977, 2127163, 4640599, 6613631, 6958667, 10343761, 24120233, 49269581, 83751121, 101649649, 166726367, 273469741, 310845683, 568951459]

cp's OEIS Frontend

A179328 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 prime(n) (or 0, if such a prime does not exist).

Table of values

List of values