# A356905 (b-file synthesized from sequence entry) 0 1 1 0 2 2 3 3 4 -4 5 -30 6 294 7 3780 8 -7904 9 -444528 10 78840 11 99657360 12 539299848 13 -27852945120 14 -361237078944 15 10124338180320 16 258341121976320 17 -4020500134465920 18 -205187357182405824 19 1330097523844832640 20 186823640933648588160 21 500469438126120583680