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!)
A153956 Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 7 ones in any 5 X 5 X 5 subtriangle. 0
1, 2, 2, 4, 14, 16, 62, 400, 1312, 8228, 101575, 539692, 5945952, 128078527, 1209629759, 22708191479, 862913200941 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A121514 A121526 A339282 * A153962 A261980 A153953
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 03 2009
STATUS
approved

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 March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)