login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A092389 a(n) is the smallest positive integer such that the product of all 1/(1-1/a(n)) is less than e, the base of natural logarithms. 1

%I

%S 2,4,53,8161,95179274,201183145328633251,

%T 185888177135331365526661328509496304,

%U 999276311297022575258979594170618811616720633706868379409096128081691360

%N a(n) is the smallest positive integer such that the product of all 1/(1-1/a(n)) is less than e, the base of natural logarithms.

%C Based on an idea of _Leroy Quet_.

%e a(3)=53 because (1/(1-1/2))*(1/(1-1/4))*(1/(1-1/53)) < e and (1/(1-1/2))*(1/(1-1/4))*(1/(1-1/52)) > e.

%K nonn

%O 1,1

%A _Hans Havermann_, Mar 21 2004

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 23 22:20 EDT 2021. Contains 346265 sequences. (Running on oeis4.)