[0,0,1,0,4,4,0,10,20,10,0,20,60,60,20,0,35,140,
210,140,35,0,56,280,560,560,280,56,0,84,504,1260,
1680,1260,504,84,0,120,840,2520,4200,4200,2520,
840,120,0,165,1320,4620,9240,11550,9240,4620,1320,
165,0,220,1980,7920,18480,27720,27720,18480,7920,
1980,220]
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