# Omega Calculator v1.2 (based on Omega Library 1.2, August, 2000):
# Sym n;
# 
# R := {[i,j]: i >= 1 && i <= 101 && exists (alpha : i = 2 alpha) &&
#              j >= i+2n && j <=401 && exists (alpha : j = 2 alpha)};
# 
# codegen R;
for(t1 = 2; t1 <= min(-2*n+400,100); t1 += 2) {
  for(t2 = 2*n+t1; t2 <= 400; t2 += 2) {
    s1(t1,t2);
  }
}

#