# A132473 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 30 4 384 5 7300 6 186620 7 6046600 8 239321824 9 11283624600 10 622168133880 11 39555748796080 12 2867144894306352 13 234743115413228864 14 21539307881356682144 15 2200021023571489017104 16 248656258771528223642624