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A047945 Number of 10-colorings of an n X n grid, up to rotational symmetry. 3

%I #8 Apr 14 2021 22:28:40

%S 1,10,2530,250025500,2500000025005000,2500000000002500005000000,

%T 250000000000000000250000000500000000,

%U 2500000000000000000000002500000000005000000000000,2500000000000000000000000000000025000000000000005000000000000000

%N Number of 10-colorings of an n X n grid, up to rotational symmetry.

%H Andrew Howroyd, <a href="/A047945/b047945.txt">Table of n, a(n) for n = 0..25</a>

%F 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.

%Y Column k=10 of A343095.

%Y Cf. A047937.

%K nonn

%O 0,2

%A _Rob Pratt_

%E Terms a(8) and beyond from _Andrew Howroyd_, Apr 14 2021

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Last modified April 19 17:51 EDT 2024. Contains 371797 sequences. (Running on oeis4.)