214889742domain: NAppears in sequencesIccanobirt numbers (10 of 15): a(n) = R(a(n-1) + R(a(n-2)) + a(n-3)), where R is the digit reversal function A004086.at n=27A102120Number of nX7 0..1 arrays with every repeated value in every row and column greater than the previous repeated value.at n=21A267718