Puzzle: sequence without multiples of 3
09-13-2019, 07:05 PM (This post was last modified: 09-13-2019 09:44 PM by Albert Chan.)
Post: #1
 Albert Chan Senior Member Posts: 1,896 Joined: Jul 2018
Puzzle: sequence without multiples of 3
What is the simplest formula that can generate: 1,2, 4,5, 7,8, 10,11 ... ?

In other words, sequence never generate multiples of 3.

f(1) = 1, f(2) = 2, f(3) = 4, f(4) = 5, f(5) = 7, f(6) = 8 ...

What is f(10^6) ?
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 Messages In This Thread Puzzle: sequence without multiples of 3 - Albert Chan - 09-13-2019 07:05 PM RE: Puzzle: sequence without multiples of 3 - Voldemar - 09-13-2019, 08:57 PM RE: Puzzle: sequence without multiples of 3 - Voldemar - 09-13-2019, 09:02 PM RE: Puzzle: sequence without multiples of 3 - Albert Chan - 09-13-2019, 09:43 PM RE: Puzzle: sequence without multiples of 3 - Thomas Okken - 09-14-2019, 12:30 AM RE: Puzzle: sequence without multiples of 3 - John Keith - 09-14-2019, 12:54 AM RE: Puzzle: sequence without multiples of 3 - Albert Chan - 09-14-2019, 01:01 AM RE: Puzzle: sequence without multiples of 3 - Gerald H - 09-14-2019, 05:37 AM RE: Puzzle: sequence without multiples of 3 - Albert Chan - 09-14-2019, 08:29 AM

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