Primes of the form !(k + 1)/2 = Sum_{i=0..k} i!/2.
A124374
Primes of the form !(k + 1)/2 = Sum_{i=0..k} i!/2.
Terms
- a(0) =2a(1) =5a(2) =17a(3) =2957a(4) =23117a(5) =204557a(6) =2018957
External references
- oeis: A124374
A124374
Primes of the form !(k + 1)/2 = Sum_{i=0..k} i!/2.