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Minimal number of vertices in an n-polytrimino (or n-polyiamond).
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%I #8 Mar 08 2023 10:33:45

%S 3,4,5,6,7,7,8,9,10,10,11,12,12,13

%N Minimal number of vertices in an n-polytrimino (or n-polyiamond).

%C An n-polytrimino is similar to polyomino but it is made with n triangles instead of squares.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Polyomino.html">Polyomino</a>.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Polyiamond.html">Polyiamond</a>.

%Y Cf. A121149, A121150.

%K nonn,more

%O 1,1

%A _Alexander Adamchuk_, Aug 12 2006