367844domain: NAppears in sequences3-wave sequence beginning with 2's.at n=31A060827a(1)=1, a(2)=2, a(n)=a(n-1)+floor(a(n-2)*a(n-1)/(a(n-2)+a(n-1))).at n=38A173090G.f. A(x) satisfies A(x) = 1 + x*A(x)^6/(1 + x*A(x)^2).at n=7A378920