1082698domain: NAppears in sequencesa(n) = Sum_{i=1..floor((n+2)/4)} a(2i-1)*a(n-2i+1), with a(1)=a(2)=1 and a(3)=2.at n=24A024945Number of (w,x,y,z) with all terms in {0,...,n} and distinct consecutive gap sizes.at n=32A212900