login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A212281 Minimal m>=1 such that n!/m+1 is prime. 8

%I #10 Feb 14 2013 06:28:06

%S 1,1,1,1,2,2,3,2,2,5,6,1,8,2,5,7,2,3,26,5,8,4,16,3,8,4,10,1,13,8,2,19,

%T 4,11,11,7,3,1,12,13,4,1,24,2,8,5,9,25,16,2,12,55,26,84,17,22,44,22,

%U 37,7,48,4,37,18,7,39,16,19,7,15,19,36,30,1,14,15

%N Minimal m>=1 such that n!/m+1 is prime.

%t a[n_] := Block[{f=n!,j=1}, While[! PrimeQ[1+Floor[f/j]], j++]; j]; a/@Range[0,75] (* _Giovanni Resta_, Feb 14 2013 *)

%K nonn

%O 0,5

%A _Vladimir Shevelev_, Feb 14 2013

%E a(13)-a(75) from _Giovanni Resta_, Feb 14 2013

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 10:28 EDT 2024. Contains 371782 sequences. (Running on oeis4.)