a(n) = (sum of first n primorial numbers) minus 1.
A217723
a(n) = (sum of first n primorial numbers) minus 1.
Terms
- a(0) =1a(1) =7a(2) =37a(3) =247a(4) =2557a(5) =32587a(6) =543097a(7) =10242787a(8) =233335657a(9) =6703028887a(10) =207263519017
External references
- oeis: A217723