84141domain: NAppears in sequencesa(n) = floor(n*phi^19), where phi is the golden ratio, A001622.at n=9A004934a(n) = round(n*phi^19), where phi is the golden ratio, A001622.at n=9A004954Floor[ concatenation of n+2, n+1 and n divided by 3 ].at n=23A075004Where records occur in A179329.at n=17A179997