[1,1,2,4,10,28,84,260,818,2609,8434,27622,91524, 306270,1033364,3510960,12000898,41239249, 142387668,493732424,1718653462,6003501630, 21037928794,73937288814,260544327156,920376228329, 3258619058158,11561493797242,41100002807572]