# A259057 (b-file synthesized from sequence entry) 1 -1 2 20 3 -560 4 20160 5 -887040 6 46126080 7 -2767564800 8 188194406400 9 -14302774886400 10 1201433090457600 11 -110531844322099200 12 11053184432209920000 13 -1193743918678671360000 14 138474294566725877760000 15 -17170812526274008842240000