A217671 - cp's OEIS frontend

A217671 a(n) is the least prime of the set of the smallest n consecutive primes a(n)=q_1(n), q_2(n),..., such that between (1/2)*q_i and (1/2)q_(i+1), i=1,...,n-1, there exists a prime, or a(n)=0 if no such set of primes exists.

n	a(n)
2	3
3	3
4	3
5	73
6	523
7	6581
8	10753
9	43103
10	43103
11	43103
12	55457
13	55457
14	28751773
15	278689963
16	278689963
17	784284211
18	4440915607
19	8340839629
20	30651695947
21	50246427391
22	50246427391

[3, 3, 3, 73, 523, 6581, 10753, 43103, 43103, 43103, 55457, 55457, 28751773, 278689963, 278689963, 784284211, 4440915607, 8340839629, 30651695947, 50246427391, 50246427391]

cp's OEIS Frontend

A217671 a(n) is the least prime of the set of the smallest n consecutive primes a(n)=q_1(n), q_2(n),..., such that between (1/2)*q_i and (1/2)q_(i+1), i=1,...,n-1, there exists a prime, or a(n)=0 if no such set of primes exists.

Table of values

List of values