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Prove that 3C1+7C2+11 C3+...........+(4...

Prove that `3C_1+7C_2+11 C_3+...........+(4n-1)C_n=1+(2n-1)*2^n`

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3. C_0 + 7. C_1 + 11. C_2 +…...+ (4n+3) . C_n=