# A346753 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 3 4 9 5 40 6 225 7 1491 8 11578 9 102852 10 1026945 11 11394955 12 139091106 13 1852061718 14 26716291693 15 415033647315 16 6908006807640 17 122645325067576 18 2313546734841633 19 46209268921868595 20 974228913850588750 21 21620679147700290210 22 503810188866302511501