OFFSET
1,1
COMMENTS
Conjecture: For each value of n, the power of each prime number in the prime factorization of a(n) is equal to 1.
EXAMPLE
PROG
(PARI) a(n) = prod(k=1, n+1, prime(k))/2 - 2^(n-1); \\ Michel Marcus, Dec 11 2019
(Python)
from sympy import primorial
def A330349(n): return (primorial(n+1)>>1)-(1<<n-1) # Chai Wah Wu, Jul 21 2022
CROSSREFS
KEYWORD
nonn
AUTHOR
Ahmad J. Masad, Dec 11 2019
STATUS
approved