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let-U-n-x-y-N-2-2x-3y-n-prove-that-U-n-U-n-2-U-n-3-U-n-5-for-n-5-




Question Number 50383 by prof Abdo imad last updated on 16/Dec/18
let U_n ={(x,y)∈N^2 /2x+3y=n}  prove that U_n =U_(n−2)  +U_(n−3) −U_(n−5)   for n≥5 .
letUn={(x,y)N2/2x+3y=n}provethatUn=Un2+Un3Un5forn5.

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