# A011787 (b-file synthesized from sequence entry) 1 1 2 48 3 43008 4 660602880 5 167761422581760 6 692647993190048071680 7 46119672943810238272430407680 8 49327181820263339694887026906732953600 9 845779385319367513935228608424336170436211507200