# A203266 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 10 4 43 5 172 6 852 7 3719 8 19290 9 90469 10 481825 11 2295973 12 12812880 13 62122518 14 346770241 15 1744884177 16 9830723932 17 49268101457 18 285020577850 19 1438021808125 20 8300553742452 21 42955378420263 22 247456097485363 23 1271978597532857 24 7520668963944205 25 38700952324615078