27143424domain: NAppears in sequencesa(n) = n-th quintic factorial number divided by 2.at n=6A034323One quarter of deca-factorial numbers.at n=5A035273a(n) = (n+1)*a(n-5), with a(0)=a(1)=a(2)=a(3)=a(4)=1.at n=31A081408Triangle T(n, k) = Product_{j=0..k} (j*n + prime(m)), with T(n, 0) = prime(m) and m = 4, read by rows.at n=20A153272