[1,2,5,15,50,175,643,2442,9497,37772,152757,
626466,2602060,10918685,46235865,197396778,
848640258,3671712505,15976961310,69874586990,
307024031593,1354759662530,6001007238525,
26676880710809,118977537295689,532239704904251,
2387650011379440,10739032580822009]
|