# A132695 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 14 4 280 5 13500 6 1494432 7 397108896 8 295442310016 9 790590934285280 10 8917538639501922816 11 411296902906980232373760 12 73215772219125676749036230656 13 49200595120135859231689635315995648