# A251594 (b-file synthesized from sequence entry) 0 1 1 1 2 7 3 240 4 21720 5 3371661 6 753384764 7 221280081152 8 8057098267140 9 34901583348508312 10 17450751376913065040 11 9843352171270598267648 12 6153355867118768196316096 13 4203420758907186950461719325 14 3102284883642894954937435310820