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!)
A155287 Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 3,3 polyhexes in any orientation on a planar nXnXn triangular grid. 0

%I #3 Mar 31 2012 12:35:22

%S 1,4,10,22,40,147,972,6099,33889,206340,1814635,22696011,314005946,

%T 4605664055,78764798797,1720340418305,47411742873448

%N Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 3,3 polyhexes in any orientation on a planar nXnXn triangular grid.

%C Same series for 0,0 1,0 2,0 2,1 3,1 3,2 3,3 polyhexes.

%e Maximal 12 X 12 X 12 example

%e ..............1

%e .............0.1

%e ............0.0.1

%e ...........1.1.1.0

%e ..........0.0.0.0.1

%e .........1.1.0.0.1.0

%e ........1.0.1.0.1.0.0

%e .......1.0.0.1.0.1.1.1

%e ......0.0.0.0.0.0.0.0.0

%e .....1.1.0.1.0.0.1.0.1.1

%e ....1.0.1.0.1.0.1.0.1.0.1

%e ...1.0.0.1.0.1.1.0.1.0.0.1

%K nonn

%O 3,2

%A _R. H. Hardin_ Jan 22 2009

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 30 12:47 EDT 2024. Contains 372134 sequences. (Running on oeis4.)