36381domain: NAppears in sequencesSemiperimeter of primitive Pythagorean triangles having legs that add up to a square, sorted on hypotenuse.at n=23A089549Number of (n+1)X(2+1) 0..1 arrays x(i,j) with row sums sum{j^4*x(i,j), j=1..2+1} nondecreasing, and column sums sum{i^4*x(i,j), i=1..n+1} nondecreasing.at n=11A232791