Bug Report

If you find any bug in the calculator please let me know. Thank you.

Testing. .  .

def catalan(n){

  if(n<=1){

    return 1;

  }

  var result=0;

  for(var i=0;i<n;i=i+1){

    var a=catalan(i);

    var b=catalan(n−i−1);

    result=result+a*b;

  }

  return result;

}

Result: Ok 2025.3.7.

Testing. . .

def catalan4(n){

  if(n<=1){

    return 1;

  }

  var result=0;

  for(var i=0;i<n;i=i+1){

    var x=n−1−i;

    var a=catalan4(i);

    var b=catalan4(x);

    var c=a*b;

    result=result+c;

  }

  return result;

}

Result: OK 2025.3.7.

Testing...

def catalan5(n){

  if(n<=1){

    return 1;

  }

  var result=0;

  for(var i=0;i<n;i=i+1){

    var x=n−1−i;

    var a=catalan5(i);

    var b=catalan5(x);

    var c=a*b;

    result=result+c;

  }

  return result;

}

Check

Testing...

def factorial(n){

  if(n<=0){

    return 1;

  }

  return n*factorial(n−1);

}

Check

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