[1,1,4,12,30,78,184,448,1033,2361,5292,11676, 25382,54470,115508,242132,502520,1032632,2103172, 4246948,8507968,16915536,33391788,65470332, 127539321,246928233,475274592,909658536, 1731703788,3279644604,6180528236]