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!)
A153944 Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 5 ones in any 5 X 5 X 5 subtriangle. 0
1, 2, 2, 3, 8, 6, 28, 164, 366, 1829, 16995, 53701, 369189, 5605587, 28526549, 299788077, 7021649770, 53533022280 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..17.

CROSSREFS

Sequence in context: A213329 A069830 A153935 * A046652 A319860 A300354

Adjacent sequences:  A153941 A153942 A153943 * A153945 A153946 A153947

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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 21 06:55 EDT 2021. Contains 345358 sequences. (Running on oeis4.)