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 Sep13 awarded Supporter Sep13 accepted Power Variant of Fibonacci sequence Sep13 comment Power Variant of Fibonacci sequence Nice one! I will try that. I guess we can just use 2*2 matrix exponentiation. Sep13 asked Power Variant of Fibonacci sequence Sep12 accepted Mix of Modulus and Division Sep7 answered Mix of Modulus and Division Sep5 comment Mix of Modulus and Division Actually I wanted to calculate the value of the function given in math.stackexchange.com/questions/190443/…. In that result there is division operation. And Modulus operation has to be performed before division in calculation the Lucas number and Fibonacci number. Sep5 comment Mix of Modulus and Division @HagenvonEitzen Yes, x is proper divisor of N. And yeah, required is (N/x)%MOD. Sep5 asked Mix of Modulus and Division Sep4 comment Number of Divisor I got the idea for the above variant also. Sep4 comment Number of Divisor Thanks a lot! I understood the mistake I made. Out of curiosity , may I ask a small variant of the above.. is it possible to find the "number of divisors of n which are not divisible by k" by simple methods? Sep4 comment Number of Divisor @KirkBoyer Yeah, Gerry is right. I want the divisors of n that are divisible by k. That is k dividing d. Sep4 awarded Scholar Sep4 accepted Number of Divisor Sep3 awarded Student Sep3 asked Number of Divisor