[0,0,0,2,7,23,54,132,290,634,1342,2834,5868,12140,
24899,50929,103735,210901,427623,865910,1750505,
3535098,7131321,14374647,28952661,58280123,
117248217,235770302,473897980,952183214,
1912535827,3840345963,7709282937,15472242645,
31045402788,62280978042]
|