[1,20,260,3212,39470,484760,5953532,73117640, 897985850,11028509072,135445355180,1663456422080, 20429547136382,250903113935780,3081437496506420, 37844317258279532,464780593592780450, 5708148959489987900,70103969470537620692, 860973771077827270580]