[0,0,1,3,6,10,15,22,36,72,165,385,859,1807,3614, 6995,13380,25773,50559,101118,204820,416405, 843756,1698458,3396916,6765175,13455325,26789257, 53457121,106914242,214146295,429124630,859595529, 1720537327,3441074654]