A196223 - cp's OEIS frontend

A196223 Natural numbers n such that Sum_{k = 1..pi(n)-1} p(k) == p(pi(n)) mod n, where p(k) denotes the k-th prime and pi(n) is the number of primes strictly less than n.

n	a(n)
1	6
2	7
3	15
4	27
5	41
6	55
7	172
8	561
9	1334
10	6571
11	11490
12	429705
13	2173016
14	4417701
15	9063353
16	9531624
17	40411847
18	64538709
19	83537963
20	121316228
21	181504240
22	222586609

[6, 7, 15, 27, 41, 55, 172, 561, 1334, 6571, 11490, 429705, 2173016, 4417701, 9063353, 9531624, 40411847, 64538709, 83537963, 121316228, 181504240, 222586609]

cp's OEIS Frontend

A196223 Natural numbers n such that Sum_{k = 1..pi(n)-1} p(k) == p(pi(n)) mod n, where p(k) denotes the k-th prime and pi(n) is the number of primes strictly less than n.

Table of values

List of values