# A184576 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 70 4 4772 5 1256737 6 1300189840 7 5343387957552 8 87635577037531120 9 5745017883201162928720 10 1506152833843572741772875256 11 1579354544764797425414872390884936 12 6624338541974058042578557252396267711144