Count the coins: Difference between revisions

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Additionally, while it's not proved as is, we can see that the first values for an amount 10^k obey the following simple formula:
 
<lang maple>ways3:=k->4/3*10^(5*k-9)/3+65*10^(4*k-8)+112*10^(3*k-6)+805*10^(2*k-5)+635/3*10^(k-3)/3+1:
 
for k from 2 to 8 do lprint(ways3(k)) od;
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