9834802domain: NAppears in sequencesIccanobirt numbers (15 of 15): a(n) = R(R(a(n-1)) + R(a(n-2)) + R(a(n-3))), where R is the digit reversal function A004086.at n=28A102125Iccanobirt semiprimes (15 of 15): Semiprime numbers in A102125.at n=8A102205