[1,1,4,9,42,130,590,2065,9590,36246,169302,662508,
3151302,12716418,60766134,249975297,1204668894,
5046138526,24387184250,103327379584,502209024746,
2152035376998,10480335520954,45276651995848,
221246448525258,963621977231330,4715103886462790,
20657384214505530]
|