# A012544 (b-file synthesized from sequence entry) 0 1 1 0 2 -12 3 -240 4 1680 5 660480 6 39530304 7 -3855231744 8 -1466146656000 9 -147651751649280 10 43245441015313408 11 21785411128189063168 12 453349606338812022784 13 -4374564365537166405795840