Code.gs

function СПИСОКЛИСТОВ(separator, exceptions) {

  var mutual = {};
  mutual.exceptions = typeof exceptions === 'string' ? exceptions.split(',') :
    exceptions;
  mutual.res = [];

  var list = SpreadsheetApp.getActiveSpreadsheet().getSheets().reduce(function(
    p, c) {
    var name = c.getName();
    if (!~p.exceptions.indexOf(name)) {
      p.res.push(name);
    }
    return p;
  }, mutual);

  if (!separator)
    return list.res;
  return '\'' + list.res.join('\'!' + separator + ';\'') + '\'!' + separator;

}