# A136468 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 106 4 4728 5 697288 6 341056672 7 561635549128 8 3172355531357504 9 62573893999774791616 10 4377792727679018712191744 11 1100465546170585425117622597248 12 1004426091768772936789017838438890496