[1,1,2,4,10,25,65,169,442,1156,3026,7921,20737, 54289,142130,372100,974170,2550409,6677057, 17480761,45765226,119814916,313679522,821223649, 2149991425,5628750625,14736260450,38580030724, 101003831722]