# A181175 (b-file synthesized from sequence entry) 0 1 1 2 2 40 3 320 4 21504 5 688128 6 178257920 7 22817013760 8 23433341566976 9 11997870882291712 10 49179307930885816320 11 100719222642454151823360 12 1650485975228872480767606784 13 13520781109074923362448234774528