Question: PLEASE HELP!! you wish to program an LED strip containing n LEDs. Each individual LED can be lit in red, green, blue, or white. How

PLEASE HELP!!

you wish to program an LED strip containing n LEDs. Each individual LED can be lit in red, green, blue, or white. How many length-n colour sequences have at least one pair of adjacent LEDs that light up with the same colour? Hint: Find a recurrence relation. (Need to find a closed form for this)

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