Question 328502
Are you forgetting the ({{{1/6}}})?
I used {{{k}}} instead of {{{n}}} so I didn't confuse with {{{N}}}.
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{{{(matrix(2,1,n,k))*(1/6)^k=(matrix(2,1,n,k+1))*(1/6)^(k+1)}}}
{{{(matrix(2,1,n,k))=(matrix(2,1,n,k+1))*(1/6)}}}
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Start there, that should get you in the right direction.