Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A153993
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A153993 Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 10 ones in any 5 X 5 X 5 subtriangle. +0
1
1, 2, 2, 4, 8, 12, 23, 90, 162, 611, 2402, 8560, 32187, 246141, 874521, 6300203, 48576212, 330649842, 2414376086, 35637800561, 246608696517, 3459350545304, 51985154551969, 691390369850685, 9855466810408009, 284813053880252248 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A086700 A104221 A078044 this_sequence A052907 A048114 A102456

Adjacent sequences: A153990 A153991 A153992 this_sequence A153994 A153995 A153996

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Jan 04 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 7 23:50 EST 2009. Contains 170430 sequences.

AT&T Labs Research

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