# A356564 (b-file synthesized from sequence entry) 0 1 1 0 2 2 3 0 4 28 5 -30 6 888 7 -1260 8 51728 9 -196560 10 5293080 11 -22286880 12 710229408 13 -4851269280 14 138348035616 15 -1091188098000 16 36482139114240 17 -379928382462720 18 11812558481332992 19 -137793570801143040 20 4609972759421554560 21 -67292912045817561600