You start with A. In every step, A gets transformed to AB and B get transformed to BA. You are supposed to tell how many ‘BB’ will occur at Nth iteration. E.G. A AB ABBA ABBABAAB … So on

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The number of 'BB' occurrences at the Nth iteration of the transformation sequence.

  • At each iteration, A gets transformed to AB and B gets transformed to BA.

  • To find the number of 'BB' occurrences at th...read more

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