number sequence | Learn C Games Programming Blog https://learncgames.com A blog about C, programming games and my ebook(s). Sat, 12 Dec 2020 09:57:56 +0000 en hourly 1 https://wordpress.org/?v=6.9.4 https://learncgames.com/wp-content/uploads/2020/03/cropped-favicon-32x32.png number sequence | Learn C Games Programming Blog https://learncgames.com 32 32 181446779 Interesting number sequence https://learncgames.com/interesting-number-sequence/?utm_source=rss&utm_medium=rss&utm_campaign=interesting-number-sequence Sat, 12 Dec 2020 00:00:52 +0000 https://learncgames.com/?p=2042 Here’s an interesting puzzle (well for some people). If I have the integers 4,5,6,7 and 8 and a special C function f so that f(4)=2, f(5) = 5, f(6)=10, f(7)=40 and f(8) = 92. What is the function f? And no it’s not a simple array containing the numbers 2,5,10,40,92 at positions 4-8! I also […]

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Here’s an interesting puzzle (well for some people). If I have the integers 4,5,6,7 and 8 and a special C function f so that f(4)=2, f(5) = 5, f(6)=10, f(7)=40 and f(8) = 92. What is the function f? And no it’s not a simple array containing the numbers 2,5,10,40,92 at positions 4-8!

I also checked the OEIS (Online Encyclopaedia of Integer sequences) and it’s not in there either. Years ago I was fooled by a integer sequence that was the maximum number of electrons in orbital shells but its definitely not that.

Here’s a minor clue. It is game related. Answer in a day or two.

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