[1,1,2,6,15,39,108,290,781,2050,5434,14210,37150, 96347,248250,636278,1620721,4108340,10361338, 26016060,65019655,161831393,401090324,990229108, 2435316984,5967684036,14572351628,35464928382, 86033632280,208062026930,501676936146]