Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A153922
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A153922 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 3 X 3 X 3 subtriangle. +0
1
1, 2, 2, 3, 4, 8, 13, 36, 59, 160, 431, 1207, 3281, 14493, 40909, 190825, 830228, 4020596, 18120315, 138139135, 645018986, 5068850751, 37171002203, 301985114648, 2294433300268, 29211683338424, 229716243590382 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A112708 A147558 A032243 this_sequence A153943 A049309 A022405

Adjacent sequences: A153919 A153920 A153921 this_sequence A153923 A153924 A153925

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Jan 03 2009

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

AT&T Labs Research

Legal Notice
© 2009 AT&T Intellectual Property. All Rights Reserved.