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!)
A259331 Ceiling of ((2^n)!)/(4^n*2^(2*n^2)). 1

%I

%S 1,1,1,20,228229620041151627,

%T 6559900643155884106407005800995037605507731066841784640626478359

%N Ceiling of ((2^n)!)/(4^n*2^(2*n^2)).

%H C. S. Lorens, <a href="http://dx.doi.org/10.1109/PGEC.1964.263724">Invertible Boolean functions</a>, IEEE Trans. Electron. Computers, EC-13 (1964), 529-541.

%H C. S. Lorens, <a href="/A000722/a000722.pdf">Invertible Boolean functions</a>, IEEE Trans. Electron. Computers, EC-13 (1964), 529-541. [Annotated scan of page 530 only]

%p f:=n->((2^n)!)/(4^n*2^(2*n^2));

%p [seq(ceil(f(n)),n=1..6)];

%Y Cf. A259326, A259327, A259328, A259329, A259330.

%K nonn

%O 1,4

%A _N. J. A. Sloane_, Jun 24 2015

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 August 7 23:50 EDT 2022. Contains 355995 sequences. (Running on oeis4.)