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A047945 10-colorings of an n X n grid, up to rotational symmetry. 8
1, 10, 2530, 250025500, 2500000025005000, 2500000000002500005000000, 250000000000000000250000000500000000, 2500000000000000000000002500000000005000000000000 (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 = 10

CROSSREFS

Cf. A047937-A047944.

Sequence in context: A155870 A167775 A249675 * A327002 A246116 A132675

Adjacent sequences:  A047942 A047943 A047944 * A047946 A047947 A047948

KEYWORD

nonn

AUTHOR

Rob Pratt

STATUS

approved

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Last modified September 20 22:20 EDT 2019. Contains 327252 sequences. (Running on oeis4.)