- **Programming**
(*https://www.mersenneforum.org/forumdisplay.php?f=29*)

- - **Request for an equation.**
(*https://www.mersenneforum.org/showthread.php?t=3087*)

Request for an equation.Let me start off by saying, I am terrible at math. I'm not even sure if I know how to explain this for you to understand, but here goes.
I am trying to obtain an equation for series of numbers, with a repeating pattern. [list][*]The numbers must be greater or equal to [I]n[/I].[*]The first series of numbers, must compose of [I]n[/I] whole numbers after [I]n[/I].[*]After the first, and each series of numbers, [I]n[/I] numbers must be excluded, followed by [I]n[/I] series of numbers, and so on..[/list] ex. [I]n[/I] = 4 would result in... 4, 5, 6, 7, 12, 13, 14, 15, 20, 21, 22, 23.... [I]n[/I] = 2 2, 3, 6, 7, 10, 11... Thanks a lot in advance. |

f(n,x) = n + 2*n*floor(x/n) + x%n
where n is your n and x is the xth number and x=0 is the first. eg. f(4,0) = 4, f(2,2) = 6 |

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