300766domain: NAppears in sequencesa(1) = a(2) = 1, a(3) = 4; thereafter a(n) = a(n-1) + a(n-3).at n=32A001609G.f. satisfies: A(x) = (1+x+x^2) * A(x^2)^2.at n=48A237651a(n) = round(c^n), where c is the supergolden ratio A092526.at n=33A382641a(n) = a(n-1)+2*a(n-2)+a(n-3) with a(0)=1, a(1)=4, a(2) = 6.at n=16A384367