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%I #12 Apr 26 2023 07:03:07
%S 1,15,170,2766,46127,811265,14605298,268039329
%N Number of polyfetts (or polifetti) with n cells, distinguishing mirror images.
%C A polyfett [polifetto] is a generalized polyabolo [polytan]. It is formed by joining isosceles right triangles on the quadrille grid along edges and at corners.
%H George Sicherman, <a href="https://sicherman.net/polyfetts/">Catalogue of Polyfetts</a>
%e For n=2 there are 4 diaboloes and 11 proper difetts, distinguishing mirror images. See the link.
%Y Cf. A337867 (number of polyfetts with n cells, identifying mirror images).
%K nonn,hard,more
%O 1,2
%A _George Sicherman_, Dec 16 2020
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