[1,1,4,11,34,96,288,833,2456,7175,21054,61633,
180674,529220,1550800,4543446,13312552,39004278,
114281748,334837511,981059294,2874447292,
8421986238,24675963950,72299290794,211833080161,
620659794584,1818500391218,5328110328116,
15611082044176,45739647180588,134014753120706,
392656158141832]
|