# A134087 (b-file synthesized from sequence entry) 0 1 1 4 2 32 3 672 4 42816 5 8822400 6 6065609984 7 14256471226880 8 117000916309144576 9 3410202131850138806272 10 357670541003601468527333376 11 136391046228660672398602237353984