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!)
A153925 Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 3 ones in any 4 X 4 X 4 subtriangle. 0

%I

%S 1,2,59,113,284,518,1796,3449,13001,33157,125582,347073,1750397,

%T 4967495,26187751,100593004,556134332,2202434132,16364033894,

%U 67618894318,527057394363,2923317994023,23673541188119,137414022400841

%N Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 3 ones in any 4 X 4 X 4 subtriangle.

%K nonn

%O 0,2

%A _R. H. Hardin_ Jan 03 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 April 3 17:03 EDT 2020. Contains 333197 sequences. (Running on oeis4.)