# A122471 (b-file synthesized from sequence entry) 0 1 1 6 2 40 3 277 4 1935 5 13540 6 94774 7 663411 8 4643869 9 32507074 10 227549508 11 1592846545 12 11149925803 13 78049480608 14 546346364242 15 3824424549679 16 26770971847737 17 187396802934142 18 1311777620538976 19 9182443343772813