168448domain: NAppears in sequencesG.f.: A(x) = exp( 2*Sum_{n>=1} 2^n/A006519(n) * x^n/n ), where A006519(n) = highest power of 2 dividing n.at n=15A1625881/4 the number of (n+1) X 6 0..2 arrays with every 2 X 2 subblock having distinct edge sums.at n=8A209379a(n) = binomial(n^2,n) mod n^5.at n=13A371471