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!)
A068280 1/13 times the number of colorings of an n X n rhombic hexagonal array with 13 colors. 1
1, 1452, 214360212, 3217625521859892, 4910668309995799841810892, 762007921240709867578673020749884172, 12022427131636998562079732651101772918046821260092, 19285841951971298297383495940474744273219471204301574972512789012 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Terms for rhombic- and staggered- hexagonal arrays are the same for n in 1..4.
LINKS
CROSSREFS
Sequence in context: A187992 A151722 A250148 * A020396 A052237 A031613
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 24 2002
EXTENSIONS
a(5)-a(8) from Alois P. Heinz, May 02 2012
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 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)