a(n) = a(n-1)^2 + a(floor(n/2))^2; a(0) = 1.A099729a(n) = a(n-1)^2 + a(floor(n/2))^2; a(0) = 1.Terms a(0) =1a(1) =2a(2) =8a(3) =68a(4) =4688a(5) =21977408External referencesoeis: A099729