This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A367173 #13 Nov 08 2023 11:27:36 %S A367173 1,2,4,12,24,74,148,456,1434,2868,8832,27780 %N A367173 a(n) = the maximum number of distinct tilings of a polyomino of size n using any combination of polyomino tiles of sizes 1 through n. %C A367173 The sequence considers reflections and rotations as distinct tilings. %C A367173 The polyominoes being tiled and the tiles themselves may be with or without holes. %e A367173 a(3) = 4 because any tromino can be tiled by (1) a tromino, (2) 3 monominoes, and (3) a monomino and a domino in two distinct ways. %Y A367173 Cf. A000105, A367172, A367174. %K A367173 nonn,more %O A367173 1,2 %A A367173 _John Mason_ from an idea of _Craig Knecht_, Nov 07 2023