A197466 - OEIS

%I #8 Dec 05 2014 02:28:59

%S 1,2,3,8,14,36,80,206,494,1259,3144,8085,20676,53635,139144,363630,

%T 952148,2504626,6603367,17463287

%N Number of one-sided poly-[4.8^2]-tiles (holes allowed) with n cells (division into triangles is significant).

%D Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Sections 2.7, 6.2 and 9.4.

%Y Cf. A197465, A197467.

%K hard,nonn

%O 1,2

%A _Joseph Myers_, Oct 15 2011