# A179499 (b-file synthesized from sequence entry) 1 1 2 4 3 42 4 768 5 20680 6 749040 7 34497792 8 1944626432 9 130528288512 10 10219233265920 11 918320724657600 12 93509880099305472 13 10677268138244018688 14 1355273477576934150144 15 189834913883100796531200