268352domain: NAppears in sequencesNumbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 37.at n=13A031715Number of fixed polyominoes with n cells and tree-like structure.at n=11A066158Number of 2 X 2 matrices with all elements in {0,1,...,n} and nonnegative determinant.at n=26A210290