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A047943 Number of 8-colorings of an n X n grid, up to rotational symmetry. 0
1, 8, 1044, 33562880, 70368748374016, 9444732965876730429440, 81129638414606686199388699623424, 44601490397061246283080881278262737180295168 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..7.

FORMULA

a(n) = (m^(n^2) + 2 m^((n^2 + 3 (n mod 2))/4) + m^((n^2 + (n mod 2))/2))/4, with m = 8

CROSSREFS

Cf. A047937-A047945.

Sequence in context: A320981 A316395 A176372 * A089672 A279881 A246114

Adjacent sequences:  A047940 A047941 A047942 * A047944 A047945 A047946

KEYWORD

nonn

AUTHOR

Rob Pratt

STATUS

approved

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Last modified September 15 04:09 EDT 2019. Contains 327062 sequences. (Running on oeis4.)