[1,1,4,16,76,399,2206,12664,74790,451420,2772313,
17267652,108821293,692609446,4445642625,
28744599748,187047449289,1224027357216,
8050074481917,53179900898596,352726704965748,
2348036826102013,15682048658695168,
105052549830928908,705678173069959645]
|