First Problem

Algebra Level pending

Let a 1 , a 2 , a 3 , … a_1,a_2,a_3,\ldots be a sequence of numbers such that a 1 = 2 a_1 = 2 and it follows a recurrence relation a n + 1 = a n + 2 n + 1 + 1 a_{n+1} = a_n +2^{n+1} + 1 . Find the value of a 1918 m o d 100 a_{1918} \bmod{100} .


The answer is 3.

Arsan Safeen by Arsan Safeen , 23, Iraq

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1 solution

Arsan Safeen
Jun 30, 2015

Sorry everyone this is the previous problem which I edited and again post it in which I deleted the previous one

0 Helpful 0 Interesting 0 Brilliant 0 Confused

There wasn't a need to delete the previous problem, once the answer had been updated.

Can you write a proper solution to this problem? Thanks!

Calvin Lin Staff - 5 years, 11 months ago

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