[0,0,1,1,4,12,33,97,280,808,2337,6753,19516,56404, 163009,471105,1361520,3934864,11371969,32865601, 94983348,274506972,793339873,2292794785, 6626299912,19150362168,55345573857,159951677089, 462268926316,1335981992356,3861059617665]