A078456 - cp's OEIS frontend

A078456 Number of numbers less than prime(1)...prime(n) having exactly one prime factor among (prime(1),...,prime(n)) where prime(n) is the n-th prime.

n	a(n)
1	1
2	3
3	14
4	92
5	968
6	12096
7	199296
8	3679488
9	82607616
10	2349508608
11	71507128320
12	2604912721920
13	105300128563200
14	4466750187110400
15	207324589680230400
16	10866166392736972800
17	634672612705724006400
18	38337584554108256256000

[1, 3, 14, 92, 968, 12096, 199296, 3679488, 82607616, 2349508608, 71507128320, 2604912721920, 105300128563200, 4466750187110400, 207324589680230400, 10866166392736972800, 634672612705724006400, 38337584554108256256000]

cp's OEIS Frontend

A078456 Number of numbers less than prime(1)...prime(n) having exactly one prime factor among (prime(1),...,prime(n)) where prime(n) is the n-th prime.

Table of values

List of values

cp's OEIS Frontend

A078456 Number of numbers less than prime(1)*...*prime(n) having exactly one prime factor among (prime(1),...,prime(n)) where prime(n) is the n-th prime.

Table of values

List of values

A078456 Number of numbers less than prime(1)...prime(n) having exactly one prime factor among (prime(1),...,prime(n)) where prime(n) is the n-th prime.