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A068290 1/16 the number of colorings of an n X n staggered hexagonal array with 16 colors. 1
1, 2940, 1475791800, 126483570405921120, 1850863560812354903891313720, 4624299555529247811516226596312142467360, 1972644284777133055191294794721562929045198175857072600, 143675548262637787606663854942059513336275448208739220399687693160870240 (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: A236196 A054832 A368650 * A231313 A259999 A096628
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 24 2002
EXTENSIONS
a(5)-a(8) from Alois P. Heinz, May 03 2012
STATUS
approved

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Last modified June 19 13:40 EDT 2024. Contains 373503 sequences. (Running on oeis4.)