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A093877 Number of fixed n-celled polyzebras (or zebra-move-connected polyominoes). 4

%I

%S 1,4,28,234,2162,21272,218740,2323730,25314097,281299736,3176220308,

%T 36332751862

%N Number of fixed n-celled polyzebras (or zebra-move-connected polyominoes).

%C A polyzebra is a (2,3) leaper. A polyzebra need not be connected in the usual edge-connected sense.

%Y Cf. A030444 (polyknights).

%K nonn,more

%O 1,2

%A Guenter Stertenbrink (Sterten(AT)aol.com), May 21 2004

%E a(11) from _Joseph Myers_, May 21 2004

%E a(12) (computed by Gadi Aleksandrowicz's program) by _Gill Barequet_, Jun 09 2011

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Last modified June 26 00:12 EDT 2022. Contains 354870 sequences. (Running on oeis4.)