224315domain: NAppears in sequencesa(n) = numerator of Product_{k=1..n} k^mu(n+1-k), where mu(k) = A008683(k).at n=33A130088a(n) = 441*n^2 - 394*n + 88.at n=22A157734Numbers k such that A001414(k) and A001414(A004086(k)) are twin primes p, p+2.at n=6A337047