346320domain: NAppears in sequencesA strong divisibility sequence associated with the algebraic integer 2 + 3*sqrt(3).at n=23A235450Number of (n+1) X (1+1) 0..1 arrays with the difference of the upper and lower median value of each 2 X 2 subblock in lexicographically nondecreasing order rowwise and columnwise.at n=10A235566