一个数列，前29项如下
                                      1

                                      1

                                      2

                                      3

                                      8

                                     10

                                     54

                                     -42

                                     944

                                    -5112

                                    47160

                                   -419760

                                   4297512

                                  -47607144

                                  575023344

                                 -7500202920

                                105180931200

                               -1578296510400

                               25238664189504

                              -428528786243904

                              7700297625889920

                             -146004847062359040

                             2913398154375730560

                            -61031188196889482880

                           1339252684282847781504

                          -30722220593745761750400

                          735384500710300207353600

                         -18335978741646751132022400

                         475481863771471289192140800

                       -12804628568422088117232979200

                                    ……
求该数列的通项公式
谢谢!