A068290 - OEIS

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A068290

1/16 the number of colorings of an n X n staggered hexagonal array with 16 colors.

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

Table of n, a(n) for n=1..8.

CROSSREFS

Cf. A068239-A068305, A000332, A002417, A027441, A212194, A212195.

Sequence in context: A236196 A054832 A368650 * A231313 A259999 A096628

Adjacent sequences: A068287 A068288 A068289 * A068291 A068292 A068293

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 24 2002

EXTENSIONS

a(5)-a(8) from Alois P. Heinz, May 03 2012

STATUS

approved