186029domain: NAppears in sequencesa(n) = a(n-1) + Sum_{k=0..n/3} a(n-3k) with a(0)=1.at n=29A113435Third row of A113435.at n=9A113438Number of nX5 0..4 arrays with each element equal to the number its horizontal and vertical neighbors within one of itself.at n=11A196014