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!)
A155283 Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 4,1 5,2 polyhexes in any orientation on a planar nXnXn triangular grid. 0

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

%S 1,13,37,190,798,5458,43604,402857,5033744,71523854,1310467409,

%T 28108624809

%N Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,0 4,1 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.

%e Maximal 12 X 12 X 12 example

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

%e .............1.0

%e ............1.0.1

%e ...........0.1.0.1

%e ..........0.0.1.0.1

%e .........0.0.0.1.0.1

%e ........1.1.1.0.0.1.0

%e .......1.0.0.0.0.1.0.0

%e ......1.0.1.0.0.0.0.0.0

%e .....1.0.1.0.1.0.1.1.1.1

%e ....0.0.1.0.0.1.0.0.0.0.1

%e ...1.1.1.0.0.0.1.1.1.1.0.1

%K nonn

%O 5,2

%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 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)