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!)
A154090 Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 5 X 5 X 5 subtriangle summing to 14. 0

%I

%S 0,877,6567,0,8577,46236,0,21094,113156,0

%N Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 5 X 5 X 5 subtriangle summing to 14.

%e Maximal zeros solution for n=12

%e .............0

%e ............0.2

%e ...........6.4.0

%e ..........0.0.0.0

%e .........0.0.0.0.2

%e ........0.0.0.0.4.2

%e .......2.0.0.2.4.0.0

%e ......2.4.4.0.0.0.0.0

%e .....0.0.0.2.0.2.0.0.0

%e ....0.0.0.0.0.4.0.0.0.6

%e ...2.4.0.0.0.0.4.0.0.4.0

%e ..0.0.6.0.0.0.2.2.0.0.2.0

%K nonn

%O 5,2

%A _R. H. Hardin_ Jan 04 2009

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 October 23 16:20 EDT 2021. Contains 348215 sequences. (Running on oeis4.)